Is the Hydro Flask Kids 12 oz bottle leakproof?

Not fully. The standard wide-mouth lid seals for upright carrying but can leak if the bottle tips over. Hydro Flask's leakproof straw and sport caps are sold separately.

How long does it keep drinks cold?

Hydro Flask rates its insulated bottles to keep cold drinks cold for up to 24 hours. In practice, parents report water staying cold through a school day.

Is it dishwasher safe?

The bottle itself is dishwasher safe on the top rack, but Hydro Flask recommends hand washing the painted bottles to protect the finish.

What age is the 12 oz size for?

It suits toddlers and younger kids, roughly preschool through early elementary. Older children usually want the 16 or 20 oz sizes.

It is the lowest price seen in the recent range of $32.00 to $34.95, so it is a fair buy. List prices for this size are typically higher.

What comes in the box?

The bottle and a standard wide-mouth lid. Straw lids, boot sleeves and other accessories are sold separately.

Where is the Hydro Flask Kids 12 oz Wide Mouth Bottle cheapest?

At Mercari, for $32.00, as of our latest check.

Where can I buy the Hydro Flask Kids 12 oz Wide Mouth Bottle?

4 stores we checked sell it, including Mercari, Poshmark, Hydro Flask, Academy Sports.

Hydro Flask Kids 12 oz Wide Mouth Bottle

Best price now

$32.00at MercariObserved at 2:45 AM

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the Hydro Flask Kids 12 oz Wide Mouth Bottle

The Hydro Flask Kids 12 oz Wide Mouth Bottle is a small insulated stainless steel bottle built for children, with a wide opening that fits ice cubes and makes filling and cleaning easier. It keeps drinks cold for hours and is sized for small hands and lunchboxes. At $32.00 at Mercari as of November 8, 2026, it sits at the low end of its short recent range of $32.00 to $34.95, so the current price is about as good as it has been lately.