
The Period Company
The Extra Coverage High Waisted Period. in Organic Cotton For Heavy Flows
$18
Buy at The Period CompanyIf you buy through this link the brand may pay us a commission, at no cost to you. It never changes our numbers. Disclosure
What “Heavy” means here
The Period Company's Heavy tier holds 45 mL Data quality grade B, converted from tampon counts by the brand's own published claim ('Heavy absorbency... Absorbs up to 9 tampons worth of flow!' (Sleeper PDP verbatim, verified 2026-06-11; flagship styles market '10 tampons / 14 hours')).
Sizesstock checked 2026-06-11
- XS
- S
- M
- L
- XL
- 2X
- 3X
- 4X
- 5X
- 6X
Not sure which size? One hip measurement answers it for every brand.
Over two years
This pair
$18
once - built to last about two years with normal care (the brand's own guidance).
Disposables
$120 to $288
over the same two years, at $5 to $12 a month - a commonly cited range.
A reusable pair only replaces disposables on the days you actually wear it, so your real saving depends on how often you reach for it. The more you do, the further a one-time $18 goes against a monthly cost. These are illustrative figures you can adjust, not a measured PeriodFinder number.
This absorbency in other brands' language
The Period Company Heavy holds about 45 mL. To get the same real coverage elsewhere, you'd need:
- KnixHeavy(36–63 mL)Data quality grade C, conflicting / unconfirmed claim
- ThinxAll Day(100 mL)Data quality grade A, brand publishes mL
- ModibodiSuper(50 mL)Data quality grade A, brand publishes mL
- SaaltSuper(40–50 mL)Data quality grade B, converted from tampon counts
- Proof (Proof by Always)Overnight (Hi-Rise / Boyshort)(45 mL)Data quality grade B, converted from tampon counts
- Ruby LovePeriod underwear (one level)(12.5 mL)Data quality grade B, converted from tampon counts
- BambodyHigh Absorbency(10 mL)Data quality grade C, conflicting / unconfirmed claim
- AisleSuper (Heavy / overnight)(40 mL)Data quality grade A, brand publishes mL
- WUKASuper Heavy(60 mL)Data quality grade A, brand publishes mL
- RaelReusable Boyshort(15–25 mL)Data quality grade C, conflicting / unconfirmed claim
- Hanky PankyRegular(15 mL)Data quality grade B, converted from tampon counts
- SkimsPeriod Panties Brief(15 mL)Data quality grade B, converted from tampon counts
Tier-for-tier equivalence by midpoint capacity. Full table · Methodology
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