The Kiinde Kozii Voyager is a compact travel bottle warmer designed for warming breast milk, formula, and baby food on the go. This innovative product requires no electricity or batteries; simply pour hot water into the insulated container to heat your baby's meal. The triple wall, vacuum insulated stainless steel bottle keeps water hot all day, allowing for multiple warmings. It includes two thermally insulated warming cups that fit various bottle sizes, making it a versatile choice for busy parents. The design is ergonomic and fits in most cup holders and diaper bags, ensuring convenience while traveling. Additionally, it is BPA, phthalate, and PVC free, ensuring safety for your infant or toddler.