Leatt Glove ADV X-Flow 8.5 Short Sand BrownVentilated Leather Glove with Impact Protection The durability of leather meets the ventilation of X Flow. The X Flow 8. 5 gloves are made from soft, drum dyed leather, which has been perforated for optimal ventilation and doubled up in high risk impact areas. Reaflex gel protects the knuckles, and thermoplastic rubber (TPR) is used on the fingers. The elasticity of TPR makes it ideal for protection while still providing full range of motion. The