We do recommend to see the measuring guide in pictures to measuring your chair seat size before purchase to ensure have the perfect fit.Chair seat cushion width 18"-24" and length 20"-24" and thickness 4".Covers only, cushion insert not included.The inner lining is covered with a waterproof coating, which can effectively prevent the penetration of liquids such as water, and better protect your furniture.These protective kitchen chair covers feature a stretch printed fabric design, keep your chairs looks special, wrinkle proof, durable enough to last for years!Design for prevent chair seats from spills and stains, especially great for upholstered dining chair,chivari chair, banquet chair, office chair, stool etc.Also perfect for outdoors,patio furniture,swimming pool loungers,beach chair,garden chair and balcony rattan chair.Outdoor Waterproof seat covers for chairs, let your chairs look new! Not afraid of rainy days.Non-slip adjustable straps for securing.Not afraid of windy days.Prevent cat's claws from scratching and cat hair to keep your chair new and clean.You don’t have to worry about your young child leaving paint or food on your beautiful upholstered chair.It is a great choice for homes with children and pets. The waterproof design makes you no longer have to worry about spilling drinks and alcohol on your beautiful chair.It is easy to install and take off, machine washable, best partner for household life.This chair seat protector is a ideal choice for room decor and housewarming gifts.