Spandex Chair Cover This is the real thing, real knit spandex, not polyester imitation. Stretches 4 ways, flexible on the size. The fabric has about a 66% stretchability, which means a chair back of 15 wide stretches to a 25, so the types of chairs this can fit can range broadly. SPECIFICATION: Wrinkle FREE, Stain resistant. Sizing: chair back: 15 wide x 17 tall Seat area: 15 x 16 Legs: 15' tall How to Care: Hand washes, dry cleaners only. Do not bleach