These blocks of non-latex sponges are a makeup artists' secret. They are softer than average to provide a streak-free foundation application, and will absorb moisture for a sheer glowy application. Alcone specially formulated this non-latex water based sponge material that won't crumble, doesn't smell, and has the perfect density for incredible control. If you wet the sponge it will swell and give you a lighter makeup application. It is also biodegradable. Approximate Dimensions: 2 3/4" x 3 3/4". 1" thick.