Plastic material. Size: Approx. 5.3 x 2.2 x 2.2 cm 2.1 x 0.87 x 0.87 inch (L xlx h). Does not require band. With hook and fixing loop adjustable to fix. Perforated, breathable and comfortable design. Protect your finger and improve the recovery process when the gap, muscle spasm, larthrite, etc. They occur in Dip. The resistant plastic is good for a long -term repeated use.