ZERO PUMP is the world's smallest and lightest outdoor sleeping cushion air pump. It is smaller than a Snickers, weighs only 1.2 ounces, and measures 1.02*2.95 inches. Lightweight and compact, ZERO PUMP can be easily hung on the key ring holder, becoming a daily necessity for your backpack travel, saving backpack space. (Products reproduced in Indiegogo crowdfunding)