DonJoy Reaction WEB Knee Brace review

The DonJoy Reaction WEB Knee Brace takes a different approach to front-of-knee pain. Instead of a solid sleeve, it uses an open web of shock-absorbing elastomer that DonJoy says shifts weight away from the painful area, plus dual-axis hinges and a breathable mesh backing. Velcro straps at the top and bottom hold it in place, and an 85% nylon, 15% spandex undersleeve comes in the box to reduce chafing. DonJoy lists it for patellofemoral pain, runner's knee, quadriceps or patellar tendonitis, meniscus injury, Osgood-Schlatter disease and mild knee pain. The elastomer is neoprene-free. Sizing runs by thigh circumference 6 inches above the kneecap, from 13 to 32 inches, and DonJoy warns it runs small. It costs $76.49 during a 10% sale, ships free, and accepts FSA/HSA payment, but Medicare will not cover purchases from this store.

Who it is for

athletes with runner's knee or patellofemoral pain

Price

$76.49 on sale (regular $84.99) for one brace; free standard shipping.

Special Price $76.49 Regular Price $84.99
Quoted from the vendor pricing page on November 14, 2026.

Key features

• Shock-absorbing elastomeric webbing that DonJoy says shifts weight to ease knee pain
• Dual-axis hinges and breathable mesh backing
• Undersleeve included (85% nylon, 15% spandex) to reduce chafing
• Neoprene-free elastomer, not made with natural rubber latex
• Worn on either leg, with or without the undersleeve

Strengths and weaknesses

• Strength: Listed for patellofemoral pain, runner's knee, Osgood-Schlatter and mild arthritis
• Strength: Free standard shipping on every order from donjoystore.com
• Strength: Sizes by thigh circumference from 13 to 32 inches
• Weakness: DonJoy says it runs small and to size up between sizes
• Weakness: Medicare will not pay for braces bought on donjoystore.com
• Weakness: $76.49 is more than the hinged Shock Doctor and Neo G braces

Key facts

• Support type: Elastomeric webbing, dual-axis hinges
• Undersleeve: Included
• Sizes: XS/SM to XXXL by thigh, 13 to 32 inches
• Price: $76.49 on sale, $84.99 regular

Where it ranks

DonJoy Reaction WEB Knee Brace is No. 5 in our Best Knee Braces verdict.