OM5 Gaming Chair ED-GM-5CH Mid-Back Ergonomic Task Chair
- ED-GM-5CH is custom-made and non-returnable. All fabric colors shown on your computer screen are approximate depending on resolution of your monitor.
What to consider when choosing a gaming chair:
Ergonomic design and comfort: The average gamer spends 8-12 hours a week playing video games. This warrants a chair that offers plenty of back and seat support for maximum comfort while keeping the body in a correct posture at all times.
Gaming chair height: To avoid straining your neck looking up or down at a screen, chairs with height adjustment ability and lumbar support allow gamers to look straight at their screen.
Office task chairs: Office chairs are designed to provide lumbar and neck support as users sit for long hours, making them perfect for gamers. As well, with adjustable armrests and, in some cases, adjustable lumbar support, adjust your chair to the perfect position for you. Plus, with a multi-functional chair you won`t have to switch chairs when you switch gears.
Description
Office Master understands why PC gamers need gaming chairs with comfort and durability as well as ergonomic design. Tested by PCGamer for its ergonomic functionality and adjustability in height, arm rests, and back rest, the OM5 makes it ideal for both work and games.
This popular gaming chair offers continuous support for your body as you move. As you recline in the OM5, the seat pan moves with your body, allowing you to change to more relaxed positions seamlessly, making it the most comfortable gaming chair.
No levers or handles are required to make adjustments for your spine or lumbar support; the chair adjusts on its own to the size and position of your body.
Adjust your OM5 with three unique adjustments: armrests that move up and down and slide back and forth; a "waterfall" effect on the Standard and EX models that adjusts the seat front up and down and; a headrest that can be elevated or lowered to provide desired support.
Specifications
| Model | ED-GM-5CH | ED-OM5-EX | |
| Overall Width | 27" | 27" | |
| Overall Height | 37 - 42" | 40 - 45" | |
| Back | 18" W x 21" H | 18" W x 24.5" H | |
| Seat | 19.75" W x 17-18.5" D (16-17.5" D Back Upholstery) | 19.75" W x 17-18.5" D (16-17.5" D Back Upholstery) | |
| Seat Height with 4" cylinder | 14.7 - 18.5" (4" travel range) | 14.7 - 18.5" ( 4" travel range) | |
| Seat Height with 5" cylinder (standard cylinder) | 16 - 21" (5" travel range) | 16 - 21" ( 5" travel range) | |
| Seat Height with 6" cylinder | 18.5 - 25" (6" travel range) | 18.5 - 25" ( 6" travel range) | |
| COM |
Back = 0.75 yards Seat = 0.75 yards |
Back = 1 yard Seat = 0.75 yards |
|
| Carton Weight | 64 lbs | 67 lbs | |
| UPS Weight | 101 lbs | 195 lbs | |
| Arms | Optional | Optional | |
| Weight Capacity | 300 lbs | 300 lbs | |
| Warranty | Lifetime Limited | Lifetime Limited | |
| Lifetime limited warranty on all structural components and 5-year warranty on fabrics & foam. For further information, please check our “downloads” tab. | |||
Features
- Variable back resistance
- PolyFlex Back
- Body Activated Motion
- Swing Arm
- Front Edge Waterfall Flex
- Designed to support users up to 300 lbs under standing commercial usage
Product Options/Accessories
Frequently Asked Questions
The reason there is a no return on these chairs is because every chair is custom made to order since each customer chooses their own fabric color, casters, cylinders etc. Everything is built to order based on the customer's specific picks. Therefore if Officemaster accepted the returns they would not be able to re-sell those chairs. In some cases they do take them back but with a 35% re-stock fee and the customer would be responsible to ship the chair back.
The OM5 is very flexible when it comes to different positions. In fact, it has a unique sliding mechanism that allows the angle of your back to be adjusted based on how much pressure you lean back with. Since you are 5'2", we recommend you get the smaller 4" cylinder (Option #6). We have two options for armrests on this chair: height adjustable only (model A) and height adjustable with pivoting inward and forward/backward sliding (RP-45). Please see the product video # 3 from Linus TechTips on our product page for more information about the sliding back and armrests.
There are three versions of this chair. Please see comparison chart at the end of this product page for more details. The Gaming Chair ED-GM-5CH has a back that is 18" wide x 21" high and seat that is 19.75" wide x 17-18.5" deep . The EX and the XT version of this chair however have a taller back - 18" wide x 24.5" high and the XT also has a deeper seat - 19.75" wide x 21" deep. Based on these specs, you can decide if you need a taller back and a deeper seat. The one thing we may recommend is a heavier 6" cylinder compared to the standard 5". However we've had 6'4" tall users who have stuck with 5" cylinders too.
Polyflex back is standard but you have the option of getting fabric on the back.
Here is the range of seat height for each cylinder: 5” cylinder – seat height 16” – 21”, 4” cylinder - seat height 14.5” – 18.5” We would recommend 5" cylinder for you and 4" cylinder for your wife. Also you might like the OM5-EX better for you as the back is taller and provides fuller support.
Adding memory foam will add 3/4" to 1" thickness to the seat.
| Model | OM5-B, OM5-G |
| Manufacturer | OM Seating Chairs |
| Part Number | OM5-B, OM5-G |
| ED-GM-5CH | |
|---|---|
| Overall Width | 27" |
| Overall Height | 37 - 42" |
| Back | 18" W x 21" H |
| Seat | 19.75" W x 17-18.5" D (Seat depth is adjusted through the waterfall mechanism of the chair) |
| Seat Depth with Back Foam Upholstery | Foam upholstery adds extra thickness to the back seat and as the result decreases the seat depth by 1/2". |
| Seat Height | 16 - 21" |
| Base Diameter | 26" |
| COM | Back = 0.75 yards, Seat = 0.75 yards |
| Warranty | Lifetime limited warranty on all structural components and 5-year warranty on fabrics & foam. For further information, please check our “downloads” tab. |
| Carton Weight | 64 lbs |
| UPS Weight | 101 lbs |
| Arms | Optional |
| Weight Capacity | 300 lbs |
| ED-OM5-EX | |
|---|---|
| Overall Width | 27" |
| Overall Height | 40 - 45" |
| Back | 18" W x 24.5" H |
| Seat | 19.75" W x 17-18.5" D (16-17.5" D Back Upholstery) |
| Seat Height | 16 - 21" |
| Base Diameter | 26" |
| COM | Back = 1 yard, Seat = 0.75 yards |
| Warranty | Lifetime limited warranty on all structural components and 5-year warranty on fabrics & foam. For further information, please check our “downloads” tab. |
| Carton Weight | 67 lbs |
| UPS Weight | 195 lbs |
| Arms | Optional |
| Weight Capacity | 300 lbs |
| ED-OM5-XT | |
|---|---|
| Overall Width | 28" |
| Overall Height | 40.5 - 45.5" |
| Back | 18" W x 24.5" H |
| Seat | 19.75" W x 21" D (20" D Back Upholstery) |
| Seat Height | 19 -24" |
| COM | Back = 1 yards Seat= 1 yards |
| Carton Weight | 69 lbs |
| UPS Weight | 195 lbs |
| Arms | Optional |
| Warranty | Lifetime limited warranty on all structural components and 5-year warranty on fabrics & foam. For further information, please check our “downloads” tab. |
| Weight Capacity | 300 lbs |
Customer reviews
- 1 stars 0
- 2 stars 0
- 3 stars 0
- 4 stars 3
- 5 stars 12
by Ethan, Chicago,IL, Jul 28, 2019
No back pain since getting it. Can't believe I've been normalizing back pain from work all of this time. If you're thinking about getting this pull the trigger its worth it. Your future self will thank you. Also, thank you to ErgoDirect for the awesome customer service making customization of the chair hella easy.
by Ebli De La Rosa Jr, Orlando, Florida, Aug 20, 2018
I bought this chair to serve as my desk chair for my gaming PC. I basically went all black with red as the seat (I believe I did molten but dont quote me on it). The chair is smooth over the tile of my home, I never get hot in it like I do with leather chairs (especially anywhere direct skin to chair contact happens). The height adjustment works great, and the mechanism that allows you to lean the chair back just by using your weight is easy to get used to, and works amazingly. The back is quite wide, wide enough for my entire back (I am 5' 10" with a stocky frame), but not so wide the chair is huge. First chair I have owned of its kind but I would highly recommend it.
by Jamison, ND, Feb 02, 2018
Everything about the chair is pretty great, outstanding craftmanship, quality materials, easy assembly, it looks great with all the options available and most importantly very little adjustment needed for optimum comfort. Only gripe though is when you lean back your body moves forward with the seat, while a lot of that resistance to hold the backrest in position is held back by the friction of your pants and the material on the seat (standard material-that is very rough feeling by the way) which can be uncomfortable at times which is as easy as just standing up and readjusting yourself to alleviate the issue. All in all I would still recommend the chair one year later even with the one flaw that is just a byproduct of not having to ever manually adjust the chair.
by C Morrison, College Station, Texas, May 04, 2017
This is a very comfortable chair, one of the only chairs I can sit in for longer than 30 minutes without pain. Be aware though that the charcoal color is NOT black, it's a grey.
by Karen M, Laguna Beach, California, Oct 20, 2016
Easy to put together; exceedingly comfortable chair. Loved the options to customize just what my son wanted. Considering getting one for myself given the price point, comfort level and helpful sales force from start to finish!
by Jason L, Washington, Apr 27, 2016
This chair is extremely comfortable. The self adjusting back works really well, supporting your back and bottom as both the back and seat adjusts to your leaning. For me and my weight, 162, it doesn't activate too easily so far. It's got just the right amount of resistance. The cushion was a little too hard at first, but after sitting in it for a month now it has softened up to a very comfortable level. I purchased the memory foam extra. I think it was worth it. This chair has completely fixed the problems I had with an Aeron chair I returned, namely the no cushion seating. The lumbar support is just about perfect for my height, 5' 8". It's also extremely well built, sturdy, and easy to put together. The adjustable arms are also nice and they don't slide back and forth too easily. Just the right amount of cushion too. They don't hurt my elbows. My only negative is that sometimes it wobbles a tiny bit, seemingly at the hydraulic stem. Depending on my sitting position though, I hardly notice it. If your leaning back a lot I would consider getting the higher back, especially if you're taller, as I missed the extra support on my shoulders when leaning back for a while. Was nervous because of the no return policy, but it was super worth it. Awesome chair.
by Austin, Florida, Apr 16, 2016
I been using the chair for about a week and I absolutely love it! The wheels glide across the floor with ease and I really like the seat itself. I went with the extra memory foam option and it seems to pay off well. Warranty for the chair seems fair and if I get 5-10 years out of it that would be excellent.
ErgoDirect customer support was excellent! I worked with Anthony M. and he helped me every step of the way and answered all my questions with great detail. He provided me fabric samples and feedback from the manufacturer to help me make the best choices for this chair. He went above and beyond as far as customer service goes.
by Jane T, Texas, Feb 26, 2016
I gave this chair to my boyfriend as a gift. He is a big gamer so sits in his computer chair for hours at a time. He LOVES the chair. He has raved about the back support and the comfort of the seat. Great purchase.
by Jeffrey, Georgia, Dec 23, 2015
I purchased this chair after watching numerous videos on gaming chairs and decided to try it. What I love about it is that the seat slides forward as the back of the chair reclines, this makes it super comfortable to lean back a little. What I hate about it is that the act of leaning back is just a bit too easy and there's no way to adjust this. In other words, what would make this chair perfect, is if there was a way to increase the resistance on the leaning back action. Otherwise, it's very comfortable and solved the issue I had were my thighs & buttocks were going numb during long work (or gaming) sessions. It's an expensive chair but has the quality to go along with it.
by Carl C, Colorado, Nov 09, 2015
I'm not a chair expert by any means so I will just list what I liked and do not like.
Likes:
-Helps me sit up straight more
-is very easy to lounge back in
-arm rests are very comfortable and adjustable if you get the nice ones
-overall very supportive and does cause any weird tense spots in my back, neck, or shoulders
One note is that I was concerned that the lack of a cushioned back (on my customized version) would make the seat uncomfortable, but the plastic flex back has plenty of give and is actually very comfortable. And breathable too!
Things I don't like:
- lack of height adjustment for the back. I get that the chair is all about not needing adjustments, but I feel like my tail bone just barely makes it up to the flex back and a shorter person would have a bad time.
-A lot of the features you'd probably want (like the arm rests) are not stock and cost extra
-Pretty expensive
-I still haven't found much use for the "waterfall lip"
by Dillon S, Nebraska, Oct 29, 2015
I was a little overwhelmed by the choices in fabrics when designing the chair myself, it would've been nice to see example photos of similar chairs (where available) to demonstrate each fabric or frame choice.
That aside, I got the chair, undamaged. Assembly was easy (just put the chair on the stand) and I was sitting in the chair within 5 minutes. I use this chair at a computer both for work, watching of streamed video (TV style usage), as well as gaming. The automatic reclining and highly adjustable arms make switching modes really comfortable and easy.
Obviously, this chair (especially with all its additional options) is quite expensive, but this feels like a chair I'll probably be using for 10 years, so I don't mind the expense. The only downside is that I have this chair in my home office, but I have to sit in a 'normal' chair while I'm at work. I guess until we have a Jetson's style ability to shrink things and take them with us, I'll just have to deal ;)
by Alex, TN, Oct 14, 2015
I believe this is the most comfortable chair that I have ever sat in. It takes out all the adjustment and does it for you. Easily worth the price and works great with my gaming set-up/also for productivity.
by Kevin D, Massachusetts, Sep 02, 2015
I spend a lot of time working from home and this is a great all around office chair. It's also very comfortable when playing games. The back and seat are connected in a way that as you move, the base moves with you. It's extremely comfortable. Highly recommended.
by Nathan H, Illinois, Apr 16, 2015
The lower back support is the best I've ever felt in a chair. It's perfect. Maintaining proper posture feels completely natural. Would recommend to anyone who sits at a desk for the majority of the day. It's an expensive chair, but absolutely worth it.
by Darren P, Tennessee, Mar 24, 2015
Professional modern appearance for my medical office while providing comfort,fatigue free posture and effortless positioning.
- Brochure Office Master OM5
- Complete Line Office Master OM5
- GREENGUARD GOLD Certificate Office Master OM5
- MMQB 030711 Office Master OM5
- MMQB 031411 Office Master OM5
- OM5 Specification Sheet
- OM5 Ergonomic Features
- How OM5 Works
- How to Replace Backrest Roller on OM5 Chairs
- Headrest Installation
- How to Replace Inner Backshell on OM5
- OM5 Series Limited Warranty Information
Officemaster OM5 Gaming Chair Specs Comparison Chart
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This item: OM5 Gaming Chair ED-GM-5CH Mid-Back Ergonomic Task Chair
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|---|---|---|---|
| Weight Capacity | 300 lbs | 300 lbs | 300 lbs |
| Overall Height | 37 - 42" | 40 - 45" | 40.5 - 45.5" |
| Overall Width | 27" | 27" | 28" |
| Back | 18" W x 21" H | 18" W x 24.5" H | 18" W x 24.5" H |
| Seat | 19.75" W x 17-18.5" D (Seat depth is adjusted through the waterfall mechanism of the chair) | 19.75" W x 16.5-18" D (Seat depth is adjusted through the waterfall mechanism of the chair) | 19.75" W x 21" D |
| Seat Height | 16 - 21" | 16 - 21" | 19 -24" |
| Seat Depth with Back Foam Upholstery | Foam upholstery adds extra thickness to the back seat and as the result decreases the seat depth by 1/2". | Foam upholstery adds extra thickness to the back seat and as the result decreases the seat depth by 1/2". | Foam upholstery adds extra thickness to the back seat and as the result decreases the seat depth by 1/2". |
| Details | Details |
