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Best Period Pants: UK Guide to Leak-Proof Underwear

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Zero Wasted • Nov 09, 2023

Are period pants really leak-proof? Can you swim in them? What are the best brands? We answer all your burning questions about period underwear and leak-proof underwear.

Period underwear is a revolutionary alternative to traditional pads and tampons. They feature a moisture barrier that spans the entire crotch area, which effectively absorbs menstrual flow so you can bid farewell to concerns about leaks. With the ability to hold the equivalent of several tampons' worth of blood, they they make an incredibly reliable companion for your period, and also offer numerous sustainable advantages too.

REPLACE 200 DISPOSABLES

One pair of pants saves 200 disposables making them a sustainable low waste option and very cost effective.

LOWER CARBON FOOTPRINT

Period pants have 6x smaller carbon footprint compared to pads and 4x less compared to tampons.

REDUCE PLASTIC

Disposable period products can contain up to 90% plastic. Period pants significantly reduce plastic consumption.

a poster that says make the switch to period pants

How does period underwear work?

The secret lies in the high-tech fabric used to create leak-proof panties. Most brands use a mix of moisture-wicking fabrics, antimicrobial materials, and absorbent layers that wick moisture away from the body locking in the fluid and preventing leaks or stains on your clothes. The gusset is fully lined for full protection and all together, these keep you clean, dry and comfortable all day, even on heavy flow days.

How long can you wear period pants for?

One of the biggest benefits of period underwear is that they can be worn all day, unlike traditional pads and tampons that need frequent changing. Depending on absorbency levels, most brands claim you can wear a pair for up to 12 hours for full protection from leaks and stains.

three women sitting on a bench wearing period undewear with plants in the background

How do you wash period underwear?

How you wash your pads and pants has the biggest impact on their carbon footprint. When it comes to washing your pads and pants, just rinse under cold water until it runs clear, then just add to an existing wash at 40c. Do this instead of a separate wash and your pads will have a 5x smaller carbon footprint than disposables. Don't use fabric softener, oxygen bleach or tumble dry, air drying will extend the lifespan.

Can you wear period pants for swimming?

Many brands now offer period pants specifically designed for swimming, using quick-drying, chlorine-resistant fabrics. A moisture wicking fabric that pulls moisture away from the skin, a middle layer that locks in leaks and absorbs menstrual blood and a waterproof outer layer. Just rinse after use and wash as you would regular period pants. We've indicated brands that offer swimwear ranges below. No more skipping pool days on your period!

Can teens use period underwear?

Absolutely! Leak-proof panties are a great option for teenagers just getting used to their periods. The coverage of full brief styles gives teens confidence at school or playing sports. Explore the brands listed below, where we've indicated if they offer a teen range.