Shop womens swimsuit bottoms at Athleta. Check out the cool collection of swimsuit bottoms at Athleta. Our womens swimsuit bottoms and boy shorts are made for beach sports or lounging in luxury. Crafted from high-quality fabrics rated UPF 50+, our bathing suit bottoms offer great comfort and protection from the harsh, midday sun. We have string and belted swimsuit bottoms in bright colors and hip prints. For added versatility, try our reversible swimsuit bottoms. If you want a little more coverage, there's nothing quite as fun and flirty as our skirted swimsuit bottom with a sarong.