Polypropylene, Steel SET OF 4 FOLDING CHAIRS: Offers reliable, on-demand seating for commercial or home uses such as corporate events, game nights, school functions, weddings, barbecues, and other events or get-togethers BIG & TALL DESIGN: Extra width and taller height make these chairs adaptable to all body types and ideal for those with mobility issues or anyone who prefers more space, and the textured and contoured seats have dry-assist drainage holes FUNCTIONAL DESIGN: Lightweight chairs provide easy portability and can nest horizontally to stack up to 50 chairs high or vertically in closets or sheds, offering quick cleanups and compact storage HEAVY-DUTY CONSTRUCTION: Combination of double-support braces and 18-gauge steel frames supports up to 650 lbs. of static weight and withstands years of quality use at indoor or outdoor events EASY TO CLEAN: Measures 19.75"W x 22"D x 34.5"H with a 17.75"W x 17.75"D x 18"H seat size and 19.75"W x 18"H back size; no assembly required; wipe down with water and a dry cloth for easy cleaning as needed