Greenprene is a sustainable, insanely warm, super stretchy, ultra-durable insulating foam that provides excellent UV resistance. Greenprene is also significantly lighter in weight than traditional neoprene materials. Greenprene is 100% neoprene free. It has been tested and approved by the United States Department of Agriculture (USDA) Bio Preferred program as a USDA Biobased product. Formulated from deproteinized natural insulating foam along with other natural additives such as sugar cane, plant oils and oyster shells. The result is a sustainable Bio Based insulating foam that is ultra-soft, stretchy, durable and lightweight. Greenprene wetsuits will allow you to move freely without restriction while keeping you warm and comfortable in the most demanding conditions.