The Session was built with stability and ease in mind. With more surface area than weâ€™ve ever created, getting out of the water is a breeze and once youâ€™re up, youâ€™ll feel like youâ€™re floating with the level spine and grip rails reducing drag. Our All-Terrain construction makes crossing wakes and rougher water simple and smooth. Like all Radar Skis the Session is built with 100% carbon laminates. All-Terrain Core â€“ Most forgiving construction. 100% Carbon Fiber - Consistent flex every time. Grip Rails 2.0 â€“ Allowing your ski to engage with ease. Oversized Flat Spot. Straight Lines. Grip Rails 2.0. Level Spine.