The Vulkan Classic Knee Support comes with Aerotherm technology which is Designed to provide the therapeutic benefits of heat retention provided by neoprene, while promoting air flow. Provides adjustable levels of compression, support and therapeutic heat retention to help relieve symptoms associated with strains, sprains, arthritis and muscle pain. Comfortable for day wear or for specific activities. Suitable for minor tendon and ligament injuries, sprains and twists. Contoured 3 piece design provides a comfortable fit and controlled compression. Helps to support and stabilise sore, weak, injured or arthritic knees during sport or exercise such as running, weight training or manual occupations with heavy lifting. This knee support is 3mm thick neoprene for greater flexibility.