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 Assorted colors that reverse to black Sold in packages of 3 To size measure PIP joint circumference If in between sizes use larger size