Uncounted thousands of folding lounge chairs in a variety of shapes and sizes are sold each year for use on beaches, beside swimming pools and on patios and balconies. One of the most common and least expensive folding lounges consists of an adjustable tubular metal frame covered by a flexible plastic cover and sold in K-Mart and similar discount stores for less than $25.
The metal frame of these popular folding lounges is quite sturdy and always outlasts its plastic cover which in use soon tends to rip or tear or develop a permanent sag and thus fails to comfortably support a person lying or sitting on the lounge.