Greenprene® is an eco-friendly, ultra-warm, highly elastic, and long-lasting insulating foam that offers superior UV protection. It is much lighter than traditional neoprene materials and is 100% neoprene-free. Greenprene® has been tested and approved by the United States Department of Agriculture (USDA) Bio Preferred® program as a USDA Biobased product. This sustainable Bio Based insulating foam is formulated from deproteinized natural rubber, sugar cane, plant oils, and oyster shells. It is ultra-soft, stretchy, durable, and lightweight, allowing you to move freely and stay warm and comfortable in the toughest conditions. Buy Greenprene® for the ultimate in sustainable, lightweight insulation.