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Fresh Start Period Kits are multiple pairs of our best-selling underwear for cycle-long protection. If you're looking for a period pack to kickstart your teen's menstrual cycle, our period starter kit has got you covered. They're perfect for stocking up even more of on your teen's favorite styles, too! Fresh Start Period Kits are only eligible for return or exchange as a unit.

We make our period underwear with cotton, so only natural fiber touches the most sensitive areas. Here’s the fabric breakdown of our Thinx Teens styles: body: 95% cotton, 5% elastane; built-in lining: 100% polyester.

Purchasing one of our Fresh Start Period Kits is a great way to have multiple pairs of teen period underwear on hand, but some people start with just 1 pair and wash them throughout their cycle (daily). Ultimately, it’s up to you on how you want to use Thinx Teens — do what’s best for your lifestyle and unique flow.

Thinx Teens should fit slightly more snug than your regular underwear to provide maximum protection from leaks. We recommend following the hip measurement, as most of our styles sit on the hips. Be sure to measure the hips at your widest point (derriere included!) Take a peek at our handy sizing chart to get the right measurements for the perfect fit.