●Wood ●DESIGN YOU NEEDS : Each bed risers wood adds 1 height, can be used on both sides. You can stack up each furniture risers together to raise higher height easily (no more than 4 risers) to lift bed, desk ●NON-SLIP RECESSED HOLE: Top 4.5 "x 2.4" diameter recessed, bottom 4.5 "x 2.4" diameter convex, with universal fit profiles designed to help securely secure all table leg risers to 1.2 "width, preventing legs or wheels from slipping out of the risers ●EXTRA HEIGHT for CONVENIENCE & CLEANING : Adds additional height space under beds and furniture making cleaning underneath furniture easier. Also, furniture risers for sofas can help you create more space for storage. Give you a beautiful and tidy house and you will in good mood when youre laying at home. ●RECOMMENDED USE : Stahala Leg riser lifts bedroom, living room, and home office furniture to a more ergonomically correct height that provides a safer biomechanical advantage to user. Help people who have health issue with theri spine or the people sit with wheelchair in a comfortable way. ●IDEAL FOR HOME AND OFFICE: Stahala specialises in designing exquisite woodwork. This quality handmade wooden furniture stand is ideal for bed, sofa and desk stands. It is also a potential solution for dealing with uneven floors and preventing furniture damage.