Best Thong: Amazon Essentials Seamless Breathable Thongs
Amazon Essentials Seamless Breathable Thongs (4-pack)
What we love: A good seamless thong doesn’t need bells and whistles—it just needs to stay hidden under clothes and feel comfortable enough for everyday wear. This affordable multipack checked both boxes in our testing, with lightweight fabric that stayed smooth beneath leggings and tighter pants. “Sometimes you just want a basic thong that disappears under clothes without costing a ton,” says Glamour commerce editor Malia Griggs. “These lay totally flat beneath leggings and tighter pants with no visible lines.”
- Worth noting: Not super breathable; slides down a little
- Sizes: XS–XXL
- Materials: 78% nylon, 22% elastane
- Colors: 15+
Best for Working Out: Under Armour Pure Stretch No-Show Underwear
Under Armour Pure Stretch No-Show Underwear (3-pack)
What we love: Need underwear for working out that won’t show through leggings, shift around mid-run, and that’s sweat-wicking? Under Armour’s no-show thong is soft, stretchy, and thin enough to disappear under tight activewear while still staying put through movement. “These are my new go-to gym underwear,” says Glamour contributor Grace McCarty. “They don’t budge when running, are totally invisible under clothing and leggings, and fit snugly around the waist. Since they’re so thin, they might need a little readjustment after a super bendy session, however.”
