Men's Hyperflex Greenprene Front Zip Fullsuit Features:GreenpreneA(R) is a sustainable, insanely warm, super stretchy, ultra-durable insulating foam that provides excellent UV resistance. GreenpreneA(R) is also significantly lighter in weight than traditional neoprene materials. GreenpreneA(R)is 100% neoprene free sustainable insulating foam. It has been tested and is approved by the United States Department of Agriculture (USDA) Bio PreferredA(R) program as a USDA Biobased product. GreenpreneA(R) is formulated from deproteinized natural rubber 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 light weight. GreenpreneA(R) wetsuits will allow you to move freely without restriction while keeping you warm and comfortable in the most demanding conditions.AQUA-SILK A(R) exterior fabric laminate is manufactured from recycled water bottles. The fabric was tested and selected for its durability, abrasion and VelcroA(R) resistance as well as its fast drying propertiesBIO-SPANA(R) fabric laminate is manufactured from recycled water bottles. The fabric was tested and selected for its superior comfort, warmth and ridiculous stretch