If You Care Sponge Cloths are made in a patented process from a three dimensional blending of cellulose, non-GMO unbleached cotton and mirabilite a natural mineral salt. During the production process, the mirabilite is washed out, leaving the remaining blend (70% cellulose & 30% cotton) extremely porous, which makes the sponge cloth extraordinarily absorbent. It can absorb up to 20 times its own weight in water. If You Care Sponge Cloths leave no streaks. They absorb liquids easily and quickly and release them with simple wringing. They are remarkably durable, tear and abrasion resistant, reusable over and over again, and can be machine washed in water up to 1900F (880C), up to 300 times. If You Care Sponge Cloths and their packaging are made from 100% renewable resources and contain no petroleum or other fossil fuel products. Each cloth is reusable and washable many times. These sponge cloths reduce waste and the amount of material going to landfill. The packaging is a biopolymer made from corn starch which is certified compostable in commercial composting facilities, leading to a further reduction in waste, greenhouse gasses and diversion from landfill.