







🦵 Elevate your knee game—support that moves with you, not against you.
The Shock Doctor 875 Ultra Knee Support combines bilateral hinges and premium latex-free neoprene with a breathable N-Tex vented design to deliver maximum stability and comfort. Ideal for preventing or recovering from ACL/PCL injuries, sprains, and hyperextension, this anatomically pre-curved brace fits both knees and supports heavy-duty daily use. Engineered for professionals and athletes alike, it offers durable, moisture-wicking protection that stays secure during long hours of activity.











| ASIN | B0059MN70E |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Best Sellers Rank | 37,885 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 280 in Knee Braces |
| Brand | Shock Doctor |
| Brand Name | Shock Doctor |
| Closure Type | Hook, Loop |
| Colour | Black |
| Country of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 11,925 Reviews |
| Included Components | Knee Brace |
| Item Dimensions | 31 x 16 x 5 centimetres |
| Item Type Name | Shock Doctor Ultra Knee Support with Bilateral Hinges - Black, Medium |
| Item Weight | 0.41 Kilograms |
| Item height | 5 centimetres |
| Manufacturer | Shock Doctor |
| Manufacturer Contact Information | [email protected] |
| Material | Neoprene |
| Model Name | Ultra Knee |
| Model Number | 875 |
| Number of Items | 1 |
| Product Care Instructions | Hand Wash Only |
| Product Warranty | 30 days |
| Size | Medium (33-35.5cm/13-14") |
| Special Features | Wicking |
| Specific Uses For Product | martial_arts |
| Specific uses for product | martial_arts |
| Sport Type | Walking |
| Target Use Body Part | Knee |
| UPC | 733313052373 |
| Use for | Knee |
A**Y
For the price this is excellent
I got an ACL injury. I work as a labourer in the construction sector, moving heavy objects most days. The Shock Doctor brace was my second choice after a German brand, however delivery times were unacceptable as I needed it urgently or I wouldn't be able to work. After 2 months of daily use for 10 hours a day, I can say it's borne the stress very well, is comfortable all day, provides very good support and it has allowed me to start healing my knee injury successfully. It's well made and has not deteriorated yet. It may not be the lowest profile however it fits under baggy work trousers just fine. The articulation is rigid enough but allows for movement without restriction or discomfort. The knee pad is very comfortable all day and keeps the knee straight to allow for recovery. I lift 30 kilo objects for hours a day and carry loads and my knee is able to cope. I recommend this knee brace especially for the price vs quality and features. I followed the advice on sizing and measurement and the brace fit very well. It does not restrict blood flow and does not overtly mark the skin. Well done Shock Doctor.
M**S
good knee support
this a great knee support which I bought to replace the one that the hospital gave me after I recovered from my accident at work 7 years ago in which I suffered a Tibial plateau fracture to my left knee, which is basically a crushed knee joint. this gives the same support to my knee as my old knee support which I was so glad about, it gives me full movement and I can walk for long distances with out pain. and helps keep the knee warm in the cold weather, as soon as I put it on the pain I may have had before putting it on goes which is so reassuring, the only thing I would suggest is that when you measure up for it go for the size up from what it suggest as the first one I ordered was a bit tight , and also you must measure 2" below the centre of your knee cap this is what I found out on the shock doctor web site. its quick to put on , just step into it and slid it up over your knee and centre it on your knee cap and adjust the bottom then the top strap so comfortable. also just to finish it is a high quality product and is well worth the price, its well made.
D**O
Good but ignore the sizing
I measured up carefully, watched the video etc. Measured again and ordered the Medium as I came in .5cm into the bottom of medium. While it fitted the knew nicely there is no way I could fasten the lower strap - I guess I have big calves! The thigh side strap I could just do up. So I returned the medium and ordered a large. This has been very good. The calf strap on me is about half way across. The thigh strap is nearly all the way across. If I want it done up tight for sport it is all the way across. It is bigger in the knee box, the medium was a better fit in that part of the brace. It has given a little with a few weeks wearing but the L still fits OK. So maybe if I had pulled the M so tight that I cut off my circulation fo a few days it might have been OK in the long run. Comfort wise, if you have ever worn any of the articulated neoprene braces you’ll know that comfort is a relative term. They are hot and sweaty (even if not using for sport) but if your knee is bad enough to need this type of support then this is a good one. Good level of support while recovering from a twisting injury that caused minor damage to ligament and cartilage.
D**6
Good value for money for limited support of PCL injuries
I have grade 2 injuries (serious) to the ACL and PCL on my left knee. I'm waiting for reconstructive surgery. The hospital supplied a Medi M.4s PCL Dynamic Brace (costing hundreds of pounds) which does a fantastic job of ensuring the tibia doesn't move backwards due to the torn PCL. A top product! Although the Medi brace is lightweight and relatively comfortable, it's still hard to wear 24/7. Also, after a while it affects the soft tissues where pressure is applied. I tried a simple, wrap-around neoprene knee support costing £15. As you'd expect it provided almost no forward support for the tibia. A waste of money for my needs. This Shock Doctor Ultra Knee Support (silly name) is pretty good. Obviously nowhere as effective as the Medi brace, but gives support and confidence for moderate walking. I'm too scared of making the damage worse to try anything more ambitious. Definitely better than nothing and can be worn under jeans all day. I needed to restart some kind of cardio exercises after several months away. I can't run right now, and don't enjoy cycling. So I've been wearing this in the pool (front crawl with no leg use). It works fine. It's well thought out and well made. Some reviewers said to go up a size. I measured 2" below the patella as 37cm and got the Large (35-37.5cm). It's very snug and I only just get it on and off, but I wouldn't want to go up a size.
I**I
Weird sizing and fit - doesn't offer the right support
Sadly it doesn't do exactly what it says on the tin. Despite the positive reviews and measuring beforehand I found this product to be a poor fit, loose at the calf, tight at the thigh. The adjustable straps do not fit the diameter of the support support sleeve. Costs too much to not offer the support needed
S**G
Gain medical advice first
I purchased the above brace after reading the reviews. I knew I had a acl issue and due to physical job was told a support would be advisable. The brace is comfortable very supportive, but when my knee collapsed in the brace the motion of the collapse against the ridgity of the brace has in fact ruptured my mcl lcl and pcl and completely ruptured the acl and meniscus to the point of none existence on scan I now need total recon surgery. My surgeon told me on seeing the brace said it is not a proper brace for the injury and it should have a movement and flexibility rather than the full ridgity which allows no range of motion. May be I have just been really unlucky but medically check fit for your purpose first
J**R
Great knee brace
Tore my median and anterior cruciate ligaments in a freak skiing accident last year. At the time and during my rehabilitation I feared that might be the end of skiing for me as the damaged knee feels significantly different to the other one. The main problem is that the structure of the knee feels “loose” despite a significant amount of physio and muscle training. Decided to give the Shock Doctor Ultra a try after reading positive reviews and crikey did it deliver. Just got back from a week in the Italian Alps and went skiing every day - the brace is comfortable, breathable, well designed so it can easily be worn under salopettes, and most importantly it gives incredible support which seems to stabilise the whole joint. Not a twinge even after a full day on the slopes. The hinges and cross brace straps really give you confidence that the original injury is being protected. Take care with sizing when ordering as my measurements put me right in the middle of the medium bracket but the brace is a really snug fit. Might be an idea to go up a size as you will still be able to adjust using the straps. I have also started wearing the brace whilst playing tennis and again it just gives you more confidence that the knee will not give way. Overall a great product that works brilliantly.
M**.
Holds knee just where I need it
I teach dance fitness classes and my knee went (old injury came back) I tried the normal elastic style knee supports, I even tried a small with an extra medium one on top but my knee still felt like it wasnt held in place. I looked through and read so many reviews and came across the shock doctor ultra. I have worn it to teach now for a couple of weeks and it is AMAZING!! because of the hinges down each side of my knee there is no way it can rotate or move where I dont want it to, it is held still and in place. I dont wear it all day as I need my knee, muscles, ligaments to work and recover but for the classes it is brilliant. I wanted to do a review in case there is any instructors out there looking for something. It is more expensive but so worth it I promise you. You cant extend your leg fully and it takes some patience to get the thing off but honestly, dont hesitate.
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