11 grams of pure performance! The R2 Oxygen compression calf sleeves are the essential piece of equipment for all athletes in search of high performances and unequalled comfort. Initially designed to meet the needs of our pro athletes racing in events as extreme as the IRONMAN® World championships in Kona, the R2 Oxygen will provide excellent muscle oxygenation and exceptional comfort regardless of the conditions. Wearing the R2 Oxygen calf sleeves during intense efforts will enhance your performances by bringing optimal muscle support, delaying muscle fatigue, limiting pain and reducing the risk of injury. Compressport’s R2 Oxygen are incredibly light: you won’t even feel them. They are very breathable thanks to the ventilation stripes directly woven into the compression tube and dry quickly. Your calves stay dry, fresh while staying fully supported. Made to deliver the best muscle protection and comfort during the hardest races, they will allow intense and explosive performances on ultra-long distances! You will enjoy this exclusive customized design for the UTMB® Series.