Best quality viscoelastic foam bolster light air filled and hypoallergenic beautifully made with a grey piped finish lovely cover in satin twill weave 100 cotton with teflon treatment anti stainbest quality viscoelastic foam bolster light air filled and hypoallergenic beautifully made with a grey piped finish lovely cover in satin twill weave 100 cotton with treatment anti stainfilling composed of 60 viscoelastic foam flakes memory foam which adapts exactly to the sha