Shower Niche 40.6 x 81.3 + 40.6 x 81.3 cm Recessed Wall Shelf BathroomProduct Features Sealed and Waterproof The insert shower niche uses a triple layer waterproof base of XPS foam board, cement mortar, and waterproof coating, ensuring 100% sealing. It safeguards walls from wet and humidity, extending their lifespan and avoiding water penetration, keeping interiors dry and hygienic. Note: This product needs to be used in conjunction with waterproofing materials, not on its own!!!! High Quality Materials Made from (HCFC