Sport Type : cycling compression sock : compression sleeve leg sleeve : calf sleeve compression calf : calf compression sleeve calf compression socks : shin splint compression sleeve Description: Specifications: Material: nylo Size Chart: Size M: Length: 28-30cm/11-11.8inch UP Circumference: 26cm/10inch Down Circumference: 16cm/6.3inch Size L: Length: 28-30cm/11-11.8inch UP Circumference: 28cm/11inch Down Circumference: 18cm/7.1inch Size XL Length: 28-30cm/11-11.8inch UP Circumference: 31cm/12inch Down Circumference: 21cm/8.3inch Package: 1Pcs * Breathable Leg Guards Unit: 1pcs Note: the unit of this item is only 1pcs, no have left and right leg differences, if you mind it, please be cautious to purchase. About the product:   1. Professional Grade Material: These leg compression sleeves are made of premium nylon quality, breathable & anti-odor. It has superior compression characteristics for maintaining firm pressure on the calves. It also allows air to circulate to the skin, while at the same time allowing moisture to wick out.   2. Pain Relief and Increase Recovery: If you've ever suffered from Shin Splints, you know the discomfort pain they can bring. Our calf compression sleeves have graduated compression that reduces muscle vibration, which in turn reduces muscle fatigue and soreness, also it can be used as a recovery sleeve, Enhance blood circulation helps oxygen starved muscles recover much faster than normal. 3. Non-Slip Design - Double non-slip silicone straps design keeps the  brace stay up on your calf; Do not worry about sweating during exercise can cause the brace to fall off.