A woman sitting on a couch with a calculator and wearing Fri Period underwear A woman in Fri Period underwear on a couch with a calculator in her hands

Girl Math

SEE HOW THE NUMBERS STACK UP

How much could you save over 2 years?

Fri Period underwear lasts up to 2 years with proper care. See how your current spend compares.

Fri Period — Savings Calculator
Currency:
$
6 13

Disposables over 2 yrs
$432
$216 / year
Fri Period — 3 pairs
$111
one-time cost
Your estimated saving
over 2 years
$321
Disposables cost Fri Period is 74% cheaper

Over 2 years, that's 600 tampons or pads heading to landfill — versus 3 pairs of Fri Period underwear, washed and reworn, period after period.

Disposable cost benchmark: TOM Organic tampons — a PFAS-free, certified organic brand with a similar values profile to Fri Period ($8 AUD per 16-pack). Your actual spend may vary.

EMPTY DOM REMOVE PROTECTOR

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Period Underwear Calculator

The switch that pays for itself — many times over.

Most of us don't think twice about picking up a pack of tampons or pads at the shops. It's just part of the routine. But those packs add up quietly, consistently, every single month.

Fri Period Classic Briefs are designed to replace disposables entirely. Made from OEKO-TEX certified organic cotton and bamboo, made free from PFAS and harmful chemicals, and built to last up to two years with proper care. Comfortable enough to forget you're wearing them. Reliable enough to wear all day.

One small switch. A wardrobe staple that works for you (and not against your wallet or the planet)

Why the Classic Brief? It's our most loved style for everyday wear and heavier days alike. Soft, breathable, and leakproof — with a fit that feels like your favourite underwear, not a backup plan.

New to Fri Period? Subscribe to our emails and get 15% off your first order.