Thin enough to wear under most work gloves. Made of 1/16 (16mm) neoprene lined with nylon. Finger Sleeves provide warmth protection light compression and mild extension support while allowing full finger flexion. Appropriate for thumb IP joint splinting. Sleeves measure 3-1/2 (8.9cm) and can be cut to any length. Available in beige or assorted colors that reverse to black. Sold in packages of 3. To size measure PIP joint circumference. If in between sizes use larger size. X-Large PIP Joint Circumference: 3-1/6 (8.0 cm).