Protects watercraft surfaces from elements, dust, dirt, sun fading and more during storage. 100% waterproof plastic extrusion construction. Fused seams prevent leaking during rain or snow. Air vents allow circulation and prevent moisture build up. Soft inner lining protects watercraft from abrasion. Specifically designed for the perfect fit for easy installation and removal. Ideal replacement for shrink wrap storage for an eco-friendly solution. *Not for use during trailering. SPARK 2up, SPARK 3up