The "O"s in the Ooze logo hold two 5ml non-stick silicone concentrate containers to hold two separate strains of concentrates. These containers are completely airtight and waterproof so you can be sure they'll be safe and sound until it's time to dab. The "Z" and "e" of the logo feature different-sized holes to store dabbers and small tools like cotton swabs and pokers, and the "e" has a larger slot for a standard lighter. Never waste time looking for your dab tools before a smoke session again!