We started with a simple belief: anything that touches your most intimate parts should never be an afterthought. You shouldn’t have to choose between comfort, style, or health–– so we reimagined underwear with you in mind.

At underdays, self-care is built into everything we do. We’re led by women, designed with our community, and backed by science. From fabric to fit, every every choice is intentional. Our pieces are made with breathable materials—OEKO-TEX® certified and free from anything harmful. Always soft. Always flattering. Made to move with you. This is underwear that becomes a ritual. Never an afterthought.