This is a support that immobilizes the thumb and wrist. It contains a removable metal plate. Hand washable. Unisex and can be used on either hand. It has Velcro straps on the thumb and wrist, allowing for size adjustment. I accidentally purchased two, so I am selling one. *Waterproof packaging and anonymous shipping. Instant purchase is OK. No price reduction. Thumb support, tenosynovitis support, arthritis support, fracture, CMC joint arthritis, trigger finger Thumb base fixation, women, men, childcare and housework, free size, wrist strain relief (for both left and right hands)