Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Thermos Funtainer is a 12-ounce kids' water bottle with a double-wall stainless steel vacuum body and a push-button lid that flips open to a covered straw. It is built to keep drinks cold for hours and to survive being dropped in a backpack. The best new price is $20.00 at Zappos as of November 7, 2026, and only two stores list it new, so the spread between sellers is narrow.
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Lowest price we've seen: $20.00 on Nov 7 at Zappos. Tracked across 2 stores since Nov 7.
Owners of the Funtainer line generally report that it keeps drinks cold well and holds up to daily kid use. Complaints tend to focus on cleaning the straw and lid parts and on the bottle being small for older children.
