Each pack includes: | SaunaBoxers underwear (100% cotton) | Ergonomic ice pack (pre-shaped to fit the pouch) | 1-Year Warranty

Place the ice pack in the freezer for at least 2 hours before your session. When you're ready, slide it into the front pouch of the SaunaBoxers. It stays in place during your session and keeps scrotal temperature in a safe range while the rest of your body absorbs the heat. The ice pack lasts approximately 20-30 minutes depending on sauna temperature. For longer sessions, swap in a fresh one.

Sperm production requires a temperature roughly 2-4°F below core body temperature. That's why the testes sit outside the body in the first place. When scrotal temperature rises consistently, the environment for sperm development becomes less optimal. Regular sauna use is great for recovery, circulation, and stress. SaunaBoxers let you keep doing it without the trade-off.

All orders ship from our warehouse in Los Angeles, California. Standard delivery takes 2-5 business days after the order is placed. Expedited 1-day and 2-day options are also available at checkout.

Machine wash cold on a gentle cycle. Tumble dry low or hang dry. Do not bleach or dry clean. The organic cotton holds its shape and softness with regular washing. The ice pack is not machine washable — wipe it down with a damp cloth and return it to the freezer.

The ice pack typically lasts 20-30 minutes depending on sauna temperature and ambient conditions. For sessions longer than 30 minutes, we recommend having a second ice pack ready in the freezer so you can swap it in without interrupting your session.

SaunaBoxers are available in S through XXL. Use the size chart to find your fit based on waist measurement. If you're between sizes, size up for a more relaxed fit or size down for a snug fit.

Yes. Return unworn items in original packaging within 30 days for a full refund minus return shipping. If your order arrives damaged or defective, contact us and we'll make it right.

Yes. Every pair of SaunaBoxers comes with a 1-Year Warranty. If there's a defect in materials or workmanship, we'll replace them.

Synthetic fabrics like polyester and nylon shed microplastics during use. In a sauna, your pores are open and your body is absorbing more from its environment. Premium cotton doesn't shed synthetics and is naturally breathable in high heat. It's the right material for this application.

They're designed specifically for sauna use, but there's nothing stopping you from wearing them outside of it. The organic cotton construction and ergonomic fit make them comfortable for everyday use as well. The ice pack is optional — you don't need it every time you put them on.

That's up to you. The ice pack is included because it's the most effective way to keep scrotal temperature in a safe range during a session. For shorter or lower-temperature sessions you may not feel you need it. For regular sauna users who care about the fertility angle, using it consistently is the point.

Regular underwear was not designed for sauna use. Most are made from synthetic blends that shed microplastics, trap heat, and weren't tested for high-temperature environments. SaunaBoxers are 100% organic cotton, Microplastics-Free certified, OEKO-TEX tested, and include an ergonomic ice pack specifically designed to protect scrotal temperature during a session.

SaunaBoxers have sold out multiple times. If your size isn't available, join the waitlist on the product page and we'll notify you as soon as it's back in stock.