McDavid MD421 Knee Support w/Stays, Adult XXL, BLACK
McDavid MD421 Knee Support w/Stays, Adult XXL, BLACK
Hero image 0 of McDavid MD421 Knee Support w/Stays, Adult XXL, BLACK, 0 of 3
Visit the McDavid Store

McDavid MD421 Knee Support w/Stays, Adult XXL, BLACK

McDavid MD421 Knee Support w/Stays, Adult XXL, BLACKMcDavid MD421 Knee Support w Stays Adult XXL BLACKMcDavid MD421 Knee Support w Stays Adult M BLACKMcDavid MD421 Knee Support w Stays Adult L BLACKMcDavid MD421 Knee Support w Stays Adult S BLACKMcDavid MD421 Knee Support w Stays Adult XL BLACK
Size:XXL-Out of stock

Key item features

McDavid MD421 Knee Support w/Stays, Adult XXL, BLACK
Current price is $38.40
Price when purchased online
Selected option out of stock
More options available

How do you want your item?

How do you want your item?
Out of stock
FSA and HSA eligible

About this item

Product details

Specifications

Indications

Ingredients

Customer ratings & reviews

4.5 out of 5 stars
stars114 ratings83 reviews
How item rating is calculated
  1. 5 stars74% (84)
  2. 4 stars15% (17)
  3. 3 stars6% (7)
  4. 2 stars1% (1)
  5. 1 star4% (5)

Customer photos

Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 83 reviews

Feb 7, 2026
KevM
5 out of 5 stars review

Seller Verified Purchase

Love for McDavid

My son is coming off ACL surgery 9 months ago. I do NOT recommend any athlete, anyone trying to participate in their sport in such a short time. He is a college athlete with an excellent surgeon and the grace of God. After wear the required brace from the surgeons aftercare, he is now wearing this McDavid support and doing exceptionally well. We have used McDavid products since he was in middle school and love them.

Review from mcdavidusa.com
Helpful?2GEI2W0FY96X33484949
Oct 29, 2025
Paul A
5 out of 5 stars review

Seller Verified Purchase

Best knee brace I've ever owned

After a bunch of knee surgeries and constant pain, this McDavid brace has been a total game changer. It's super stable, really comfortable, and actually lets me move without worrying. Easily the best brace I've ever worn. 5'11, 245 lbs, very active.

Review from mcdavidusa.com
Helpful?2GEI2W0FY96X33484949
Feb 7, 2026
Tom J
5 out of 5 stars review

Seller Verified Purchase

Knee Brace

Excellent support for an injured knee. Good price. Excellent service.

Review from mcdavidusa.com
Helpful?2GEI2W0FY96X33484949