Designed by the E-sports community, this Sleeve was built with one thing in mind - Performance. The design of the sleeve along with the natural bamboo fabric increases blood circulation while it's smoothness gives you extra sliding ability to keep you agile. The moisture-wicking technology keeps you going for hours while still keeping you cool.. Material95% Bamboo - 5% Elastane. Size. Cuff - Small 5 cm & Large 8  cm. Arm - Small 11 cm & Large 12.5 cm. Maximum Stretch - Small 14.5 cm to 16.5 cm Large 18.5 cm to 20 cm. Length - Small 41 cm & Large 43 cm