Constructed of heavy nylon, these bins offer convenient under-bed storage. They come with easy-close fastening straps to hold them in place under the bed and can detach to easily collect items around your room. Includes four easy-roll casters per bin. Material: Nylon. Care and Cleaning: Wipe Clean With a Damp Cloth. Dimensions: 10. 0 " H x 36. 0 " W x 25. 0 " L.