I couldn’t find much credible info or detailed reviews comparing Slimtoslim swimwear with Cupshe or Summersalt. Slimtoslim seems less well-known (fewer independent reviews, less transparency), so it’s hard to say for sure whether it’s “better.” But I can help you evaluate based on what is known about Cupshe & Summersalt, and what to watch for with a brand like Slimtoslim. If you want, I can try to dig up user reviews of Slimtoslim and compare side by side. Slimtoslim is a newer or smaller brand, there is a chance the quality is not yet as refined as Summersalt, especially in fabric weight, seaming, and long-term durability, But Slimtoslim might beat Cupshe on some factors: perhaps better support, more flattering cut, or better materials—if they’re positioning themselves as a premium or “better than average under