PREMIUM MATERIAL COMPOSITION: Crafted with meticulous attention to detail, our wrist splint is composed of high-quality materials, including 90% neoprene rubber, 10% nylon polyester. EASY SIZING - Measure your wrist circumference in centimetres and select your size in the drop down box above, Small (13-14.5). Medium (14.5-17). Large (17-19). Extra Large (19-21). It is recommended to go for the bigger size if you are in-between sizes. UK MADE - Designed in association with Clinicians, this Actesso branded carpal tunnel splint is available in left or right and can be used men and women to support a variety of wrist conditions. SOFT, VENTILATED NEOPRENE - allows moisture to wick away from the skin, allowing this wrist splint to be used for longer than most generic supports and to provide all-day comfort. RELIEVES PAIN DAY & NIGHT - this wrist support contains a metal bar that rests underneath the wrist and relieves the strain on the tendons, helping to reduce your wrist pain both day and night. This makes this wrist brace ideal for use during the day, whilst using the computer or the ideal Carpal Tunnel Splint for sleeping or resting. SUPPORT & RELIEF FOR WRIST PAIN - If you are suffering from wrist sprains, RSI, joint pain, wrist tendonitis, Carpal Tunnel Syndrome, or a wrist fracture then this hand splint is for you.