Is the Resa really leakproof?

Yes, when the mode indicator is turned to the leakproof position the lid seals shut, so it can go in a bag. In sip mode the straw is open and it will spill if tipped.

How does the Ü-Turn lid work?

Turn the indicator to sip mode to drink through the straw, to leakproof mode to close the straw, or to cleaning mode to flush the lid. A rubber grip lets you turn it without touching the straw.

Can I put it in the dishwasher?

BrüMate recommends hand washing. The body, lid and silicone sleeve are best cleaned by hand to keep the powder coat and seals in good shape.

Does it fit in a car cup holder?

Yes, the base is sized to fit standard cup holders, and the non-slip bottom keeps it steady.

How does it compare with a Stanley Quencher or Yeti Rambler?

The Resa's locking lid is the main difference: most rival straw tumblers are not fully leakproof. It holds less at 25 oz and is hand wash only, where some rivals offer larger sizes and dishwasher-safe parts.