Just like countless other ’90s and ’00s trends, pool slides have made a major comeback this summer. They’re not for simply tossing into your gym bag; a high-end slip-on style is the one designer item you need to have in your closet before the season ends. Don’t believe us? Check out the official numbers.

Lyst teamed up with Business of Fashion to analyze the top products of the season, filtering through a range of statistics using 4.5 million data points per hour from over 65 million annual consumers, four million products, and 12,000 brands. As for which specific style came out on top? That would be the comfy-chic throwback Gucci GG Blooms Supreme Slide Sandal ($290).

So why exactly are four of the 10 biggest fashion sellers of summer 2017 from Gucci? Marketing, of course! The young generations are loving the brand’s nostalgia-feel offerings. Yep, the ’90s are back, baby. Plus, according to Lyst and Business of Fashion‘s findings, the new floral touch on their number-one slides were a genius touch for summer.

Gucci’s weren’t the only slides on the top products list, though. Givenchy’s Logo Slides ($295) came in at number five, in case florals aren’t your thing.

Low-top white sneakers also had their moment in the sun, with the Comme des Garcons ($125) and the Common Projects ($410) pairs clocking in at numbers six and nine respectively. Gucci’s Ace Embroidered Sneakers ($695) made the cut at number eight, while Saint Laurent’s Opyum Pump ($995) with the logo heel were the only high heels on the list, landing in the second spot.

But the summer of ’17 is all about accessorizing; Gucci’s GG Logo Belt ($420) scored third for hottest item and Chloé’s Nile Small Crossbody Bag ($1,550) came in fifth.

The last two spots went to the only clothes on the list, and they were both dresses. Not surprisingly, Gucci’s now-sold-out Pussy Bow Silk Crêpe de Chine Dress came in seventh. The last spot, number 10, went to the also sold-out DVF Serafina Dress. Check out the full list below!

How do you feel about the throwback style? Tell us if you indulged in a pair of designer slides for the summer @BritandCo!

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(Photos via Vittorio Zunino Celotto, Aaron Davidson/Getty, Gucci, Barneys)