There is a lot of information to be gathered from what the Olsen sisters wear—their outfits are loaded with hidden cues and know-hows that aren’t immediately obvious to the untrained eye, but have a lasting impact on our wardrobes. Honing in on their footwear, they have championed comfort-led classics for years—The Row is responsible for the humble flip-flop having an image overhaul (selling rubber pairs for $690) and the twins have often been spotted in slip-on Vans, Adidas Sambas, and Birkenstock Bostons.

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The Olsens know a resilient purchase better than most; one that’ll be equal parts practical and stylish and can be put to seriously good use. Mary-Kate Olsen was sighted wearing a pair of Tevas Voya Infinity sandals, with statement crossover straps, several times back in 2019, however like all good Olsen style pictures, six years later this endorsement is still making people invest in this specific style–Vogue editors have heard a lot of Tevas praise coinciding with last week’s heatwave and I, for one, have already seen multiple pairs on Lime bikes.

While Mary-Kate Olsen and fellow celebrity wearers, like Demi Moore and Katie Holmes, have been seen sporting theirs for several summers, they are poised to be a bestseller for another year. Tevas were born from a river guide crafting two Velcro watch straps onto a pair of flip-flops to make them float, meaning they’re fiercely practical and hardwearing. Beyond a fashion context, the brand has amassed a steadfast, non-fashion fanbase who wear theirs for actual hikes rather than around SoHo.