MySplint Wrist Splint uses custom fit technology to mold to your wrist perfectly, providing customized support to help relieve pain. Ideal for carpal tunnel, tendonitis, arthritis pain, deQuervain’s syndrome and more. Easily heat activated in the microwave for a custom fit. Tri-layer technology utilizes a moldable splint covered by a layer of ultra plush comfort mesh. 3 adjustable hook-and-loop closures. Can be molded up to 5 times to ensure a perfectly comfortable fit. One size fits most, left or right wrist.