This tube version is is designed to be used for milder pain in the knee. The brace is made up of two different materials. A more compressive synthetic neoprene at the front and the ventilating Active X material on the back . The brace provides compression and improved proproception. The Patella opening is anatomically formed for optimal fit. Around the Patella opening is a soft padding for increased stabilization of Patella . The brace has velcro adjustment on the front of the thigh and on the calf back.Active X Sleeve PLUS has two spiral uprights on each side and two stabilizing circular bands. PLUS is therefore more stable than the Active X Sleeve. Moreover, has the orthosis the same design and properties.