Provides a 360 degree air flow with a unique patented ergonomic designnGently dries from the inside and out for soft, frizz free curlsnEnhances natural curl definition while adding volume and lift to all curl typesnThe DevaCurl Deva Fuser uses advanced Curl Technology inspired by nature to gently dry curls more naturally for beautiful long-lasting volume and maximum curl definition. Features a lightweight plastic-fiberglass construction for ease of use and strength and durability. Universal, one piece adapter that fits most commercially available hair dryers. Barrel Circumference: 5.5 inches to 6.5 inches Barrel Diameter: 2 inches to 2.5 inches Barrel Length: 2.5 inches to 6.5 inches