For economical wrist support, this wrist brace is made of woven elastic, which delivers comfortable compression to help diffuse stress over a broader group of muscles and other tissue. Helps reduce strains and swelling. Easy on/off with hook and loop closure, feels made to order. Wrist assist in black elastic (311L) has a convenient thumb loop for easy application. Heavy-duty support. All wrist assists are size regular (fits most wrists).