When you wear the Under Armour Women's Pure Stretch Thong Underwear underneath your yoga pants or fitness shorts, you might not feel anything at all--but if you do, it'll be the lightweight, unfinished-hem comfort of their minimalist design. The pure stretch thong moves with you, eliminating bunching whether you're executing flawless hip openers on your mat or tearing up the trails on your evening run. Best of all, this thong's smooth silhouette is undetectable even under your form-fittingest yoga pants.