Is the Stanley Quencher H2.0 30 oz leakproof?

No. The FlowState lid seals around the rim but the straw opening lets liquid out if the tumbler tips over. Carry it upright in a bag.

How does the 30 oz compare with the 40 oz Quencher?

The 40 oz holds more and is taller and heavier. The 30 oz is easier to carry by the handle and still fits most cup holders.

Yes. The tapered base is sized for standard car cup holders, which is a common reason owners pick it over wider bottles.

Stanley recommends hand washing the tumbler to protect the finish and lid seals. The lid parts are easier to clean if rinsed soon after use.

It ships with the FlowState lid and a reusable straw. The lid slides to a straw position, an open sip position or closed.

Only in color and branding. The body, lid and insulation are the same as other Quencher H2.0 30 oz tumblers.

Rated 4.7 out of 5 from 131 ratings.

7 stores we checked sell it, including Academy Sports, Ace Hardware, Sierra, mercari.com, DICK'S Sporting Goods.

At Sierra, for $20.00, 33% under what the other stores charge, as of our latest check.

$20.00at SierraChecked 2 h ago

33% under what the other stores charge

Compared across 7 stores. Prices are checked against each store and labelled with when.