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The MD-428 Pro Stabilizer is a professional quality bi-lateral hinged knee brace that features geared polycentric hinges with hyperextension stops, a padded hinge cover and condyle pads. Aircraft grade aluminum hinge and uprights lend rigidity, support and durability. The #428 also features a professional quality 4-way stretch neoprene sleeve with reinforced nylon pockets to house the hinge.
The Pro Stabilizer offers a maximum level of knee support and protection.The thermal neoprene sleeve provides compression and therapeutic warmth to help relieve pain and promote healing. The hinges offer increased mechanical stability.
Caution: Do not apply over open wounds or if you have a susceptibility to dermatitis.

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428
Geared polycentric hinge with exterior rubber pad. 3/4" thick condyle pads. Reinforced pockets for greater durability. Maximum protection. Sizes: S-XXL See Size Chart Below
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| Measure Around Knee | |
| Knee | Size |
| 12" - 14" | S |
| 14" - 15" | M |
| 15" - 17" | L |
| 17" - 20" | XL |
| 20" - 22" | XXL |