Sturdy, 1-inch, aluminum A-frame construction provides strength and durability.. Push-button, dual-release mechanisms for easy-folding using fingers, palms or side of hand to accommodate users' abilities and travel convenience. 5-inch front wheels and improved-design of rear glide caps allow for walker to slide easily and smoothly over most surfaces.. Adjustable height and vinyl-contoured hand grips set 17 inches apart for added comfort and stability. U-shaped, front cross frame design creates greater clearance allowing the user to bring the walker closer to achieve more stability when changing between seated and standing positions.. . WARNING: This product can expose you to bisphenol A (BPA), which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.