【Size】Three Sizing Options - Small - 9.4" Length X 8-10" Circumference; Medium - 11.4" Length X 10-13" Circumference; Large - 13.4" Length X 12-14" Circumference. 【Material】Arm cast cover is made of soft fabric, elastic, flexible, breathable, and has good elasticity to stretch to fit your cast. It's washable, but not waterproof, easy to clean to ensure long term use. 【Design】There is a deliberate thumb hole on the top of our cast sleeve, allowing full movement of fingers and thumb. This practical feature greatly enhances the user's convenience to perform daily activities even with a cast on. 【Function】The surface of the arm cast protector is smooth,comfortable to use. It can prevent your arm from being caught by clothes or scratched by furniture, protecting you better. 【Ideal Gift】Our cast protectors for sports can certainly serve as a thoughtful gift for friends who have a plaster. Its attractive and diverse pattern designs not only suit everyday clothing and uniforms, but also add a dash of fun. Arm Cast Cover Short Cast Covers Protector Arm Sling Sleeve Cast Decorations Removable Washable Arm Wrist Elbow Protection Cover for Kids Adult