The 100% waterproof XPS core is reinforced with a HDPE + Mesh Slick for even more strength, projection and durability. This stronger base married to the high density IXPE deck and rails gives great stiffness and a solid, confidence-inspiring feel. On top of this, the Fuse features a high quality Coiled PU Leash to reduce tangles and let you concentrate on your paddle stroke. Construction:Core: 100% waterproof XPSDeck: 4mm IXPERails: Double 4mm IXPEBottom: 0.4mm reinforced HDPE Mesh slickLeash: Coil urethaneFeatures: ChannelsHDPE + Mesh slick Bottom:This material takes all the advantages of the HDPE but adds a woven fibre mesh structure during the moulding process which adds a great deal of strength and allows for great projection when performing turns in steeper waves.IXPE Deck/Rails:A stiffer, higher density deck and rail material which enhances the strength, feel and durability of the board.