The 4.6" RIP Knuckle Bubbler puts a completely portable power hitter in the palm of your hands (well... your knuckles). Works great with Pre-Rolls. Platinum cured silicone in multiple cool colours is heat resistant, dishwasher safe, virtually indestructible, and holds colour forever. Models include Blue & Black Swirl, Glow-in-the-Dark, Glowing Neon Green & Yellow Swirl, Glowing Neon Yellow & Red Swirl, and Rasta. Lifetime warranty.