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No Leaks. No Stress. Just School Days as Normal.

UK lab-tested, toxin-free period underwear and swimwear designed for teens. Leak-proof protection for lessons, PE, sleepovers, and school trips.

 Up to 100ml protection 

Toxin-Free

4.9 Parent Rating

Liberty Underwear -Teen girl playing in the gym

Why Choose Liberty Period Underwear?

Liberty Underwear provides independently UK laboratory-tested period underwear for teens and adults, with options from light and medium flow to ultra-heavy 100ml protection. Our period pants are silver-free and formaldehyde-free, with selected materials OEKO-TEX® certified.

100ml Maximum Absorbency . Independent UK Lab Testing . Silver & Formaldehyde Free

Shop by Need

Find the right reusable protection for your flow, stage or activity

Liberty teen period underwear and first-period kit

Teen Period Pants

Comfortable pants, kits, sleep packs and swimwear for school and first periods.

Liberty medium-flow period underwear

Medium & Lighter Flow

Up to 25ml protection for work, school, exercise and everyday wear.

Liberty reusable period swimwear

Period Swimwear

Reusable bikini bottoms and swimsuits for swimming without disposable period products.

Liberty women’s reusable continence underwear

Women’s Bladder Leaks

Soft, reusable women’s continence underwear with protection up to 100ml.

Liberty ultra-heavy-flow period underwear

Heavy & Very Heavy Flow

35–100ml protection for heavy periods, very heavy days and secure overnight wear.

Liberty men’s reusable continence underwear

Men’s Bladder Leaks

Discreet, reusable men’s continence underwear with protection up to 100ml.

INDEPENDENT UK LABORATORY TESTING

We tested the fabrics.

Here’s what the laboratory found:

Shirley Technologies Limited tested Liberty’s outer pant fabric and inner absorbent gusset. No detectable silver or formaldehyde was found in either tested section. All irritation-screening observations were within the laboratory’s stated acceptable criteria.

Report 83780 · 3 July 2026 · Independent UK laboratory testing

Cross section of Liberty absorbent gusset layers

No silver detected

Nothing was detected in either fabric section tested

No formaldehyde detected

Nothing was detected in either fabric section tested.

Measured pH

Outer fabric: 5.5
Inner gusset: 5.7

Results apply to the submitted garment and fabric sections described in report 83780.

★★★★★ 98% of customers gave Liberty five stars

Kelley, Jersey

No leaks with my very heavy flow

Alicia's mum, Switzerland 

My daughter can finally manage swimming lessons

Helen, Jersey 65yrs

The continence pants gave me back my confidence 

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