Extra long wrist and thumb support with removable, mouldable 2.4mm thick thermoplastic stay provides a customized fit. Thin, 1.6mm, perforated neoprene provides cool, lightweight support and compression. Use the special thumb strap to stabilize IP extension or trim the thumb tip below the IP joint for thumb IP motion. Soft, terry cloth liner feels good against the skin. Anti-microbial and latex free. Removable thermoplastic insert restricts movement of the wrist and thumb joints and can be trimmed. Pocket helps pad the stay for a comfortable feel against the skin. Fits either the left or right hand. Measure wrist circumference for sizing. Splint length measures 22 to 24cm, depending on size.