Male Urinal with Glow in The Dark Cover [32oz Pack of 5] Portable Pee Bottles for Men Used for Hospitals, Incontinence, Emergency and Travel (5) Earbyear Unique Airflex valve technology is KWANWA Unique Airflex valve technology is integrated into the nipple and are designed to reduce colic and discomfort by venting air away from your baby's tummy this could cause burns or injury Replace all batteries at the same time Do not carry batteries loose in your pocket or purse Details: CONVENIENT DESIGN – Pee bottles feature a flat bottom and side allowing them to stand sturdy both upright and laying down without tipping over making measuring and keeping track of urine output easy and convenient