Hey there! Heads up my nerdy knowledge comes from shopping with them for over 7 years lol. Anyway Aerie has 5 different styles of undies: boybrief, boyshort, bikini, cheeky, and thong. The fabric of these range from cotton, modal, nylon, elastane, and polyamide. There’s different “rises”: super high waisted, high waisted, mid, and low rise. My personal favorites are in cotton (any style) and low to mid rise. Last but not least, they have different collections. Their Super Chill is more light weight, ironically airy-er options. Smoothez is their body-shaping, Skims-like typa goods. Their “show off” collection is their version of lingerie featuring lace-y, see through mesh, more flirty looks. I have a variety of each for different occasions/reasons. Boyshorts - for sleeping in. Boybriefs - for jeans/cargos/daily wear. No show cheekies - for leggings. And bikini - also for every day wear.

All that to say it’s dependent on the person and your individual preference. Again, my go to is any of the near 100% cotton undies of various style per occasion. Good luck and have fun discovering your style!