Abstract: A bio-based wetsuit and material is described where ethanol derived from sugar cane is dehydrated into ethylene and polymerized to produce bio-based ethylene propylene diene monomer (EPDM). The bio-based EPDM is mixed with additives and a blowing agent to produce sugar cane derived closed-cell foam for use in wetsuits. Depending on the wetsuit application, the density of the sugar cane derived foam may vary. In many wetsuit applications low densities such as less than 0.25 grams/cubic centimeters are desirable.