Guide

Leak proof underwear is underwear with a built-in absorbent layer sewn into the gusset — it looks, fits, and washes like a regular pair of underwear, and its only extra job is catching light leaks before they reach your clothes. That's the whole concept. No tubes, no adhesive strips, no bulky shape

The right protection level comes down to one number — the absorbency capacity in milliliters — and matching that number to how much backup you actually need on a given day: light is up to 100ml, moderate is 100-150ml, and heavy is 150-200ml or more, or a diaper-cover style for the highest end. That'

Whether your brand should develop a private label period running short depends on four things — whether you already have a period-underwear customer base, whether you can accept 6-8+ weeks of development time, whether you're comfortable telling customers the category-wide testing gaps honestly, and

Yes, you can run in period underwear — the real question isn't whether it's possible, it's whether the specific pair you're wearing was actually built for running or just happens to be underwear you could technically run in.I got asked this in a way I wasn't expecting a couple months ago. One of our

30ml is a capacity target, not a wear-time promise — how long any period running short actually lasts on your body depends on your flow and how hard you're training, not on the number printed in a spec sheet.I want to get that out of the way in the first line because it's the single most common misu

I get the same email at least once a month. A brand founder finds a swimwear factory, likes the fabric photos, sends over a period swimwear inquiry, and writes something like: "Can you just add a liner to your regular bikini?" That tells me right away they haven't sourced period swimwear before — an

Layering a regular period brief under running shorts gives you two separate waistbands, two layers of fabric across your hips, and a gusset that isn't mechanically attached to the outer shell — a 2-in-1 sport short like our LY4291-1 replaces both with one garment where the leakproof gusset is built

I get a version of this email at least once a month: "We want seamless period underwear, like the kind that doesn't show under leggings." Then I ask a follow-up question — do they want true circular-knit construction, or just something that won't leave a panty-line ridge under fitted pants — and hal