Mainstays 40 oz Double-Wall Vacuum Insulated Stainless Steel Tumbler with Straw and Handle
- Walmart now offers the Mainstays 40 oz Double-Wall Vacuum Insulated Tumbler for $6.22 (regular price $12.44).
- Free shipping within the US on orders over $35.
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Editor's Pick: The 40 oz capacity holds a big serving of water, so you can leave it in the car or on your desk and not need a refill for half the day. The double-wall vacuum construction means no condensation beads up on the outside when you fill it with ice water, so your desk stays dry. The handle makes it easy to carry, and the straw is great for one-handed sipping while driving. The white body is simple and clean, and it dries without leaving water spots.