The Rob Machado Futures Fins are designed for Medium surfers (65-88Kg) for responsive high performance surfing. They are constructed using environmentaly friendly fast growing bamboo combined with Futures popular Blackstix carbon placement for high performance surfing in a range of conditions. The crescent carbon placement and bamboo core allows you to store energy and release it through turns when needed. The durable ultra light weight materials and their unique placement on these Bamboo Futures result in a fin with extra spring for fast responsive surfing.