Dérives FUTURES Twin + 1 - Blackstix FrostThe Blackstix Twin +1 fin set features two pivot style side fins with a smaller center fin for added stability. Constructed of Futures Blackstix carbon fiber with a V2 inner fin, the fin generates speed with ease, providing smooth rail to rail transitions for high performance surfing. This set is perfect for waves from 2 to 8 feet, from gentle beach breaks to fast point breaks.