Session Goods Waterpipe w/ Silicone Footer & Replacement Parts FEATURES: Bong, bowl, and downstem made of borosilicate glass Silicone footer indicates water line and protects your glass Interchangeable silicone accessories to compliment your style Extra grommet, bowl, and downstem included for those inevitable accidents Dimensions: 84mm × 84mm × 256mm | 3.3" x 3.3" x 10" Glass thickness: 4mm Downstem size: 16mm Bowl size: 10mm