The utility model relates to a sheath for a body, which can be worn on a predetermined part of a limb of a human body, and comprises a sheath body, wherein a wearable space is formed therein, and a bundle of mouth portions is formed on both ends of the sheath body, and the bundle mouth portion has elasticity and protection The outer layer of the body is formed with a plurality of convex particles containing strontium elements. When the user wears and causes the convex particles to contact a predetermined part of the human body, the convex particles can release negative ions by friction and heat. Far infrared rays, in turn, achieve anti-oxidation, promote cell activation, protect against cold, and improve resistance.一種束身用護套，可穿戴於人體四肢之一預定部位，包含一護套本體，其內部形成有一穿戴空間，護套本體之兩端分別成型有一束口部，且束口部具有彈性，護套本體之外層，成型有複數顆包含鍺元素的凸狀顆粒，當使用者穿戴並使各凸狀顆粒接觸到人體之預定部位後，各凸狀顆粒可藉由摩擦及受熱，而釋放負離子及遠紅外線，進而達到抗氧化、促進細胞活化、禦寒、及改善抵抗力之功效。
