Metal, Plastic 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 COMFY AND DURABLE: Textured contoured seats with dry-assist drain holes provide superior comfort and support during long events and prevent water pooling, while floor caps protect surfaces from damages 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: Chairs measure 17.5" W x 18" D x 31.5" H open and 17.5" W x 2.5" D x 38.25" H folded with no assembly required, and they can be wiped down with a damp cloth for easy cleaning as needed