The Nebula is a dry top constructed from a combination of our eXhaust 2.5 and eXhaust 3.0 waterproof breathable nylon.. This dry top features our 3 ply nylon on high wear areas like the shoulders and arms while keeping things light using our 2.5 ply nylon on the torso. The Nebula is designed to give you a completely unrestricted range of movement, while being light, durable, and waterproof. The overlapping double-tunnel and the DCS waist works with your skirt tunnel to provide you with a drier seal and better paddling experience. Enjoy those epic whitewater adventures.