FloridaBrands Square Bed Risers, Black, Set of 4 Bed risers are made from 60% Recycled Polypropylene for years of reliable performance Ideal solution to add over 5 Inch of storage space under your bed May be conveniently used on virtually any type of bed Comes in a set of 4 and each bed riser measures: 6.6"L x 6.6"W x 6"H