Superior function and water-cooling is at your fingertips with the Pulsar Swiss Block Double Stack Bong! This awesome water pipe is made from quality borosilicate glass with a reinforced thick base. Smoke travels through the fixed interior downstem into the matrix percolator for tons of tiny bubbles. As you inhale, water and smoke are circulated through the two swiss percolators stacked above, guaranteeing a smooth result every time! Keep your face away from the flame thanks to the bent neck design. Each bong includes a matching herb slide.