Ooze Smell Proof Backpack - Traveler Series - Smoke Gray 1000 mAh Its 510 thread connection is

Its 510 thread connection is compatible with all pre-filled oil cartridges and can also be used with wax attachments and other 510 accessories

There is one on the front

this is just a device

If you’ve used a C-Core device for concentrates

You’ll be surprised how much kief builds up around the sides

Ooze Smell Proof Backpack - Traveler Series - Smoke Gray 1000 mAh Its 510 thread connection isMore storage and security than ever! A 3 digit lock is hidden by a velcro flap. No one needs to know you're carrying precious cargo! Plus a laptop sleeve inside, lots of pockets, and a secret side pocket on the front. Stash ALL your goodies in style (and secrecy) with the Traveler Series Backpack! Equipped with a full carbon lining and a hidden 3 digit combination lock, youll always travel under the radar. It features a laptop sleeve, tons of storage