Alphax Right Hand - Size M Product Use/How to Use: Tendonitis Uses: Wrist, Fingers Suitable Size: [M Size] Thumb circumference: 5.5~7 (cm) Wrist circumference: 14~18 (cm) *Thumb circumference (around the first joint of the thumb) Wrist circumference (at the thickest part of the wrist) Materials: [Body] Nylon, Polyurethane [Bone Section] Acrylic resin Color: Black Weight: 10g Feels like a custom fit! A wrist support that's easy to move in and doesn't slip. Thin yet powerful. The center cross bone firmly supports the thumb and wrist that give you a sharp pain. [Like a custom-made fit] Easy to put on just by wrapping it, and the wide belt firmly holds the wrist. It also fits the fingers. It fits firmly with stretchy and powerful fabric. It uses a material that feels good against the skin, also used for underwear. [Fixes areas that are prone to strain] Restricts movement by fixing the base of the thumb and the wrist in two places. Supports work, hobbies, and housework. [Supports housework] Uses water-resistant material, so it's okay for light water work. It's thin, so you can wear it with rubber gloves. New, unused, but the box has damage. Please consider purchasing only if you understand this.