X Bionic Run Energizer Socks. The high compression socks for runners. The gradual compression combats gravity, accelerating the flow of venous blood back to the heart. This improves blood circulation & nutrient supply, relieves the strain on the cardiovascular system & lowers the pulse rate. The compression also acts to reduce muscle vibration in the sensitive calf area, reducing fatigue & maximising nutrient absorption. What all this amazing technology results in is better endurance & comfort. The energy this saves is available to you as an additional reserve during your exertions. In addition, the gradual compression, generated by the Smart Compression Zone improves regeneration & reduces the risk of thrombosis. With a refined system of protectors & cushions, Run Energizer socks give your feet a 13-way protection. The ventilation system with the patented Air Conditioning Channel in conjunction with the Air Cool Stripes & the anatomical right-left food bed, pumps warm moist air out of the shoe with every step & sucks in fresh air right under the sole. This keeps the feet dry & therefore resistant to blisters & chafing. Air Conditioning Channel – ventilates & dries Self-adjusting Cuff – adapts to any size leg without slipping or constricting X-Cross Bandage – cushions and stabilises the sensitive ankle area without restricting freedom of movement Toe Protector – protects against blisters & chafing Traverse Air Flow Channel System – lateral ventilation under the sole Anatomically shaped footbed – for a precise fit Heel Protector – reduces friction & the risk of blistering Achilles’ Tendon Protector – reduces the incidence of pressure points & the risk of scraping & bruising Air Guides – creating space between the sock & the shoe, these are positioned along the Air Conditioning Channel to facilitate continual air circulation, reducing the risk of blisters Instep Protector with Air Vent Zone – distributes & absorbs pressure from lacing Toe Tip Protector – protects the tips of the toes Air Cool Stripes – cooling channels under the sole of the foot Air Flow Ankle Pads – provide the ankle with maximum protection