Twist Slim Pen 2.0 - 320 mAh Flex Temp Battery - Mellow Yellow 510_24 This backpack has two large

This backpack has two large zippered pockets

WAX ATOMIZER | The Duplex Pro includes a wax atomizer that matches the color of the device

It was designed to look like a lowercase letter "e"

There are two horizontal pockets across the front

It features a teardrop-shaped water chamber with an arch percolator for insanely smooth hits

Twist Slim Pen 2.0 - 320 mAh Flex Temp Battery - Mellow Yellow 510_24 This backpack has two largeWhat it is: The best selling Ooze pen of all time! This is the 510 battery that comes to mind when you think of an Ooze pen. Why we love it: Its reliable, compatible with ALL 510 cartridges, has a twist dial for voltage control, and comes in tons of colors. The Twist Slim Pen 2. 0 is the revamped, upgraded version of our original Twist Slim Pen. We gave it a more streamlined silhouette by removing the chrome collar at the top, lowered the voltage