The Bell-Horn Zippered Anti-Embolism stockings help people who are in a prone position for extended periods of time by keeping blood from collecting in the lower extremities. The anti-embolism stockings provide gradient compression to the legs, allowing the blood and fluid to circulate normally. The zippered anti-embolism stockings make it simpler to apply the stockings to the legs. The zipper ring is easy to pull up over the leg. Choose from one of 4 sizes (S, M, L, & XL) and 3 leg lengths: Short, Regular, and Long. The anti-embolism stockings come in a white color like most TED hose.