The Aspire Cleito Pro Sub-Ohm Tank is the new flagship model of the original Cleito line-up, featuring a maximum eJuice capacity of 4.2mL, triple slotted bottom airflow control, and slide-to-open top-fill method. The Aspire Cleito Pro can utilize previous Cleito Coils, the original Cleito and Cleito EXO Coils, along with the introduction of the 0.5ohm Cleito Pro coil with a range of 60 to 80W. The Cleito Pro Sub-Ohm Tank utilizes a standard 3mL capacity glass that can be upgraded to a whopping 4.2mL eJuice capacity using the included bubble glass expansion. The Cleito Pro adjustable airflow system sits at the base, with a knurled control ring, that inlets air from the bottom and channels upwards in the epicenter of the coil. Contrastingly, the top-fill system is accessed by sliding the top cap ring upwards to reveal a fill port.