Set of 4. Soft and strong foam. Flame-retardant, non-toxic and very easy to use. Thick and extra-cushioned. Warranty: One year. Made from foam. No assembly required. 3 in. L x 2 in. W x 2 in. H (1 lbs.) These strong, foam corner protectors are designed specifically to stop children hurting themselves on sharp corners of tables and other furniture. Protect your child from hard and sharp edges.