The strength and rigidity of the core comes from super high pressure drop stitched material. The 6" core has a multi-layer construction that reduces flex. Extensive EVA non slip traction on top for grip and comfort. Single skeg design (9" fin under the water) is removeable. Design is perfect for performance and tracking in various wave and water conditions. 4 Stainless tie downs for securing gear. Inflated dimensions: 12ft 6in. 325lb Weight capacity. Includes: Hi-Pressure 20 PSI pump. H3 Inflate/Deflate valve. Storage bag.