Push bubble to release lid. Won"t spill if dropped! Contoured for easy pill removal. Ideal for travel. No. 772. The unique patent-pending design of the Ultra Bubble-Lok 7-Day Pill Organizer features an uncomplicated locking system that simplifies operation and prevents pills from spilling inside your purse, briefcase or suitcase and the lids won"t open if the organizer is dropped. Made in USA.