Thinx are washable, reusable period underwear. They look and feel just like normal underwear. They keep you feeling fresh and dry with their built-in protection, are super comfy and machine washable. Thinx’s modal cotton thong is as light as a whisper and has a barely there fit for bodycon dresses and jeans. Designed to hold up to one tampon’s worth, wear it when your flow is the lightest.