Patented worldwide, the GoTubb's ingenious design opens and closes with just one hand. Just squeeze the sides of the humangear GoTubb - 3-Pack and the lid is released. To close, simply press back on. The small size is great for pills, a stack of quarters, or two sets of ear plugs. A recessed, textured labeling area resists being rubbed off, and the transparent tops let you see what's inside without opening them.