Not all companies are making wetsuits from our ecological standpoint. Yamamoto is a limestone-based neoprene from Japan. Yamamoto's limestone is over 99% calcium carbonate and took over 80 million years to make, as shell secretions of marine organisms were deposited on the floor of the open ocen.
Yamamoto rubber has 23% higher close cell structure than oil derived neoprene, making it more buoyant, while also having a maximum elongation of over 480% (human skin stretches roughly 60%). The extra cells contain nitrogen gas and make our wetsuits warmer. Additionally, Yamamoto's neoprene is close to 95% water impermeable, compared to the petroleum-based standard of almost 70%.
