Compressport R2 OXYGEN Compression calf sleeves: The Compressport R2 OXYGEN calf sleeves promote maximum performance. The R2 Oxygen has been developed as an ultralight version of the R2v2 compression sleeve. It is the lightest calf sleeve on the market, weighing just 15 g. The quick-drying material provides 360° aeration while delivering a second-skin feel, where you hardly even know you're wearing anything. Ultralight fibres maintain its compression properties, offering targeted muscle support, preventing shocks and damage from movement to muscles in the form of micro tears. Ventilation strips in the back of the sleeve are designed to expand as the muscle enlarges as a result of prolonged running. Compressport R2 OXYGEN