The Radar Session was built with stability and ease in mind. With more surface area than Radar has ever created, getting out of the water is a breeze, and once you're up, you'll feel like you're floating, with the level spine and grip rails reducing drag. All-Terrain construction makes crossing wakes and rougher water simple and smooth. Like all Radar Skis, the Session is built with 100% carbon laminates.. Most forgiving All-Terrain Core. 100% carbon fiber for consistent flex every time. Grip Rails 2.0 allow your ski to engage with ease. Oversized flat spot allows ski to auto-level. Straight lines let the ski roll on edge more naturallySession 67Length: 67"Surface Area: 442.13 sq. in.Max Width: 8.00"Max Speed: 30 mphTerrain: Open WaterRecommended Weight: 130-190 lbs.Session 69Length: 69"Surface Area: 468.92 sq. in.Max Width: 8.24"Max Speed: 30 mphTerrain: Open WaterRecommended Weight: 175-230 lbs.Session 71Length: 71"Surface Area: 482.51 sq. in.Max Width: 8.24"Max Speed: 30 mphTerrain: Open WaterRecommended Weight: 220+ lbs.