The tapered, flat bottom of the tumbler allows it to stand on any surface, while the angle of the glass' wide chamber means it'll balance perfectly if someone's had one too many and starts jostling the table.
So, as long as you don't fill it too high, you're safe from splashes and stains. And at $52, they're a bargain, considering all the cash you'll save on cleaning services.
Hear that? That's the collective gasp of joy from moms everywhere when they get a set of these for Christmas. No longer will somebody have to get a sponge.
Ali Drucker is a staff writer at Supercompressor. She's not a mom, but she'd still like you to buy her these. Follow her on Twitter and Instagram.