Polyurethane 501 restraints possess the benefits of the leather cuffs withadditional features. Generation 4 & 5 Polyurethane enhances patient comfortand staff's ease of use. Advantages of this unique product are that it isdurable, won't stretch or shrink and cleans quickly and easily. Color codedfor quick visual identification: Wristlets are blue and anklets are green. Remember,"Raise your hands to the blue sky and walk on the green grass.”Use with Humane Restraint's disposable fleece liners FWL-200 (Wrist)and FAL-200 (Ankle) for additional comfort.