The lime juice compartment is equipped with a durable foam sponge that easily absorbs and contains lime juice, lemon juice, or any other liquid of your choosing. Designed to ensure evenly coated rims, this foam sponge allows you to gently press your cocktail glasses down to produce perfect layers of juice for securing salted or sugared rims. Made from safe food grade ABS plastics material, it’s wear-resistant and durable, not easy to deform. The sponge is washable and reusable.