Lighter than wood, the standard aluminum crutch provides stability and durability. Double extruded center tube provides additional strength to weight-bearing area. Push-pin adjustment makes it easy to adjust crutch height in 1" increments. Non-skid, jumbo size vinyl contoured tips provide excellent traction. Easy wing nut adjustments for hand grips. Comfortable, durable underarm pad and hand grip. 350 lb. Weight Capacity on aluminum crutch (excluding pediatric). Limited Lifetime Warranty.