This 4" x 4" Glass Field Tile is crafted from the highest quality glass using recycled materials. The glass is non-porous and water-resistant, perfect for use in wet or dry conditions. Your kitchen is the most important space in your home-don't settle for inferior, low-quality products. This tile is handcrafted using special techniques that consist of first painting the back with the desired color, then protecting the dried paint with a ceramic coating and firing it in a kiln.