Empervious Corner Bench Kits are made of 100% waterproof XPS Foam core, reinforced with fiberglass mesh and finished with a cement coating for added durability. The bench kits come in 4 pre-cut panels that get assembled on site to form a corner bench. Bench kits save time and money versus cutting your own bench from building panels or purchasing a solid foam bench. Each piece is pre-cut to perfectly seam together using our Empervious Sealant and fit into the corner of your shower. The bench kits are available in 2 sizes, 17”x17”x24.5” and 22”x22”x31.1”, and both are 20” tall.