Vulkan Airxtend Adjustable Neoprene Knee Support FOR FASTER INJURY RECOVERY VULKAN Neoprene helps retain heat at the site of the injury, accelerating the healing process by increasing blood flow and oxygen to the damaged tissues. The advanced range of supports have been designed with a unique combination of Coolmaxand#174; and Airpreneand#8482; technology for unbeatable protection and performance. ADJUSTABLE FIT Slimline VULKAN AIRXTEND is designed with adjustable tension straps to ensure a proper fit with minimal bunching and slippage. Due to its slim line construction the support can be worn under everyday clothing for treatment and support throughout the day.