air Bikini

Like all of our undies, Thinx air™ absorbs your period. The main difference? The body of these undies is made with an ultra-thin, cooling, and sweat-wicking micro-mesh fabric that keeps you *extra* fresh and dry. We especially love these for travel, workouts, sports, or any activity. Bonus: these styles hang dry 2x faster than our original undies.

Our underwear for periods absorbs your flow, blocks out odor, wicks moisture, and prevents leaks — so you feel fresh, dry, and comfortable! No pads, tampons, or other period products are needed. Our period-absorbing underwear is washable and reusable — providing a more sustainable alternative to single-use disposable products.

Every flow is different! You can wear Thinx underwear for periods for as long as your flow allows. The absorbency style also plays a factor, as some underwear styles are more absorbent than others.

We recommend following the hip measurement to find the most accurate size. Be sure to measure your hips at their widest point, derrière included! We recommend sizing up in underwear styles that fit below the natural waist, or if you're looking for the best fit postpartum. The underwear should fit snugly but not so tight that it becomes uncomfortable.