Perfect for your school, office or home. Bentwood Chairs are made of multi-ply birch with a uni-body design contoured for healthy posture, smooth rounded edges, and non-scuff boots to reduce noise and protect flooring. Chairs stack four high to save space when not in use. Check for loose or worn parts periodically and tighten or replace as necessary. Use a clean, damp cloth or sponge with mild soap, non-bleach detergent, or general-purpose cleaner.