no, we don't fill them with helium. They just feel that way! at 6.4oz, it's the lightest diaper bag on the market. But that's just the beginning. Totally machine washable and totally reversible. It's kinda like having two bags in one....but actually since you can tie the straps in tons of different ways to suit your style, it's like having a lot of bags in one!!

-measurements: 11” x 13” x 1 ½”