The unique 3-hole air entrance of the Voopoo Uforce L Tank Atomizer provides an adequate and balanced airflow for every puff. In the meantime, condensate and oil leaks are successfully prevented by the top air intake. https://www.vapeuniverse.co/products/voopoo-uforce-l-tank-atomizer?pr_prod_strat=e5_desc&pr_rec_id=69f827753&pr_rec_pid=8197458133244&pr_ref_pid=8744195883260&pr_seq=uniform