Big Books on one side, regular books on the other. Four big book shelves and four regular book shelves, each approximately 1" deep. • KYDZSafe corners & edges are rounded to minimum of 1⁄2" radius. KYDZSafe kickplates prevent pinching & lost objects. KYDZSafe 15" depth adds increased stability & 25% more storage than competitor's 12" depth. • KYDZStrong materials are guaranteed to last. KYDZStrong dowel-pin construction adds stability & strength. KYDZStrong Recessed backs give stability & structural integrity. • KYDZTuff acrylic finish is ultra-long lasting and resists yellowing. The UV coating is environmentally friendly and easy to clean with an extra-strong resistance to daily wear and common cleaning products, like bleach and nail polish remover.