Proof (Proof by Always)
Proof (Proof by Always)'s sizing and absorbency, translated onto the same scale as every other brand - so you can shop it (or leave it) with a fair comparison.
How Proof (Proof by Always) sizing runs
Proof publishes no run-small / run-large / true-to-size statement. The size guide's only fit guidance: "If your measurements fall into different size categories, your hip measureme
| Size | Hip | Waist |
|---|---|---|
| XS | 33–35" | 23–25" |
| S | 35–38" | 25–28" |
| M | 38–41" | 28–31" |
| L | 41–44" | 31–34" |
| XL | 44–47" | 34–37" |
| 2XL | 47–50" | 37–40" |
| 3XL | 50–54" | 40–44" |
Know your hip measurement? Get your size in every brand at once.
What Proof (Proof by Always)'s tiers really hold
- Super-Light5 mL Data quality grade B, converted from tampon counts
- Light5 mL Data quality grade B, converted from tampon counts
- Moderate15 mL Data quality grade B, converted from tampon counts
- Heavy20 mL Data quality grade B, converted from tampon counts
- Super-Heavy25 mL Data quality grade B, converted from tampon counts
- Overnight (Super Heavy Brief)35 mL Data quality grade B, converted from tampon counts
- Overnight (Hi-Rise / Boyshort)45 mL Data quality grade B, converted from tampon counts
Claims verified 2026-06-10 · Millilitres are the brand's own published claims, normalized - methodology. Cross-brand view: the full table.
No live Proof (Proof by Always) catalog
We track Proof (Proof by Always)'s sizing and absorbency data (above) but not a live catalog - the brand doesn't run a scrapeable store of its own. The translation still works if you own or are considering their products.