What Is Seamless Underwear?

Seamless underwear is knit so there are minimal or no visible seams, especially at the edges. The appeal is twofold: a smooth, invisible look under fitted clothing (no lines showing through leggings or a dress), and a barely-there feel since there are no edges digging in. It's the go-to when you don't want underwear to show.

The way it's made — often knit in one piece with bonded or laser-cut edges instead of stitched hems — is what gives it that flat, seam-free finish. It's especially popular under athletic wear and form-fitting outfits. The main alternative, styles with traditional stitched seams or a textured knit like ribbed, offer a different look and feel. Whichever you choose, the fabric still matters most for all-day comfort — favor something soft and breathable. More in seamless vs. ribbed.

Try BHG everyday basics.