Summersalt has built a compelling swimwear brand around data-driven fit, using body-scan data from over 1.5 million women to engineer pieces that genuinely flatter a wide range of body types. The Sidestroke one-piece earned its viral status -- it is supportive, comfortable, and looks great across sizes 2 to 24. The sustainability angle is authentic, with recycled fabrics sourced from post-consumer materials and ethical manufacturing practices. The fabric quality is solid, holding up well to chlorine and saltwater with good shape retention. On the downside, the $100 minimum for free shipping is high for a brand with a focused product range, and the lack of a loyalty program is a miss for a DTC brand that should be cultivating repeat buyers. Design variety has expanded but still leans toward a specific clean, minimalist aesthetic that will not appeal to everyone. For shoppers who value inclusive sizing, sustainable production, and scientifically engineered fit, Summersalt delivers genuine innovation in the swimwear space.