The Sports Compression Calf Sleeves strengthen the muscles in the lower legs through powerful targeted compression. The compressive effect is based on medical research, graduated from ankle to calf to boost blood-flow. This promotes circulation in the legs and improves venous/blood return. The muscles receive a better supply of oxygen, continue to perform more effectively and regenerate faster. Stimulating blood circulation also warms up the muscles, protecting against injury. The compression reduces uncomfortable muscle vibrations in the calf, thus preventing premature fatigue and stress injuries like shin splints. Ideal for sports including endurance running, ball sports and general active movement. If your last calf sleeves slid down, lost their compression after a few washes or lacked real muscle support, these deliver the consistent, medical-grade compression athletes rely on for power and endurance These products come as a pair. * Please note colour of product is forefront colour in product images.