Available only from Hammacher Schlemmer, this the knee wrap that uses graduated compression as well as heat therapy to increase blood flow and relieve common joint and arthritic pain. Secures to the knee via hook-and-loop fasteners that allow you to adjust the level of compression while built-in heating elements adjust to three temperature settings. Rechargeable battery provides up to eight hours of heat at lowest setting (four at highest) from a six-hour charge using the included adapter. Sizes M, L, XL, XXL, and XXXL. Set of two.