Socks with "Printed" in the name include Polyester in their Nylon and Spandex blend to allow designs to be printed onto the sock rather than knitted in. The presence of Polyester will give the socks a slightly different fit and feel. These socks are rated 20-30 mmHg like the Marathons in this collection. Step into the wild with that Marathon Printed, Jungle sock! Featuring vibrant toucans, fierce leopards, and brilliant butterflies. It&';s the perfect blend of adventure and performance, built to support your every move. Complete your animal kingdom collection with the Marathon Printed, Safari sock. All our socks offer true graduated compression, which increases blood flow and allows you to perform at your peak, recover faster and feel better sooner. Our advanced design supports critical muscles and tendons, and our proprietary blend of materials wicks moisture for a comfortable fit that goes the distance.