🆕️The WonderPax Reusable Baby Bottle Gel Pack

"This cold/heat pack is reusable with custom designed snaps to wrap it around a baby bottle. The bottle pack takes seconds to heat up after you click its metal disk, and keep the bottle warm for up to 30 mins. Your baby can enjoy a warm meal on the go. You can also use the pad to keep beverages cold, just put it in the freezer and it will keep drinks cold up to 30 mins." - https://wonderpax.com Originally bought for hand pain, I found something else I liked better and it was never used.