Trigger Release Feature Allows The User To Close The Walker Without Removing Their Hands From The Handle And Is Ideal For Individuals With Limited Finger Dexterity Trigger Release Can Be Reached With Hands Of All Sizes Durable Composite Trigger Release Resists Cracking And Breaking Sturdy 1 Diameter Anodized Extruded Aluminum Construction Ensures Maximum Strength While Remaining Lightweight Replacement Wheels 5 (1081a) Includes Rear Glide Caps (item # 1085a) And Glide Covers (item # 1085b) Allowing Use On All Surfaces Patented Limited Lifetime Warranty 350 Lb. Weight Capacity.