Costco’s New Summer Tumblers Are 'So Much Better Than Stanley'

The number one tool you’re going to need to make it through this sweltering summer heat? A good water bottle. And when we say good, we mean one that will keep your drink cool for at least six hours. 

Well, we're in luck because Costco has a new Stanley cup dupe on shelves that claims to keep drinks cool for 24-plus hours—and for a fraction of the name-brand price.

Costco’s New Copycat Stanley Cup

Stanley cups have caused quite the tumbler craze on social media, fueled by a combination of influencer marketing and WaterTok. And sure, they’re great for keeping up your daily water intake, but if you’re not interested in spending a small fortune on an effective water bottle, we have the perfect alternative for you.

This summer, Costco is selling sleek, 40-ounce tumblers that already have customers running to the store. The copycat cups look very similar to the Stanley brand with their lid, straw, sturdy handle, and stainless steel design—but without the high price tag.

Better yet, customers can’t stop raving about the performance. “I have multiple of these in different colors and I cannot stress how AMAZING they are,” said one fan on TikTok. “I left mine by my pool all day in 110-degree heat and it still had ice at night!” shared another.

Believe it or not, in a side-by-side comparison, customers are still picking their Costco find over the big-branded bottle. “I LOVE [S]simple [M]odern more than my Stanley!” said one fan on TikTok. Another fan on Instagram shared: “These are the best tumblers! 10x better than Stanley. I have 2 of them and the ice lasts longer than 24 hours.”

Costco had already given Stanley some serious competition this year with a 32-ounce insulated ThermoFlask, but this new product is even larger and cheaper than the earlier offering. The extra-large Simple Modern tumblers come in four fun and vibrant colors (including a leopard print) and are priced at $22.99.

According to reviewers, they’re leak-free and car seat cup holder-friendly—two musts for a trusted summer cup. Plus, they’re dishwasher safe.

With summer already in full swing, it’s no surprise these trendy tumblers are already flying off the shelves. So, grab one on your monthly Costco run to stay hydrated in style all summer long.