Sam's Club has introduced new Zak Designs character tumblers for children. The tumblers are BPA-free, feature antimicrobial materials, and are recommended for children aged 3 years and above.

Owala just expanded its range with new tumblers designed to tackle everyday hydration needs and even the occasional drop, thanks to their leak-proof design.

Full disclosure: I never really understood the hype behind the massive 40 oz tumblers that have reached viral fame. They seemed cumbersome, clunky, and leak-prone. But I can admit I was wrong.