WORKS FOR BOTH PUFFCO PEAK AND PEAK PRO! The Puffco Travel Glass is back and adds a new depth to both the Peak and Peak Pro experience. Our patent-pending design lets you lock in water just by twisting the mouthpiece. This keeps your device ready to use at all times without the need to fill. *Never fill your glass when attached to the base **Never disassemble the mouthpiece, turn to open position when cleaning, do not remove ***Before storage or travel when in closed/locked position, flip your travel glass upside down to ensure no water comes out.