Ask us anything.

Four layers do the job: a moisture-wicking top layer keeps you dry, an antibacterial layer keeps you fresh, an absorbent core holds 50–75 ml, and a leak-proof shield makes sure nothing gets through. It fully replaces pads and tampons — no extras needed.

It depends which pair you're in, and the difference is worth knowing. On nightwear the shield runs up the sides, because lying down moves flow sideways. On daywear it covers the gusset, which is where flow goes when you're upright and moving. So if you're a side sleeper, or it's the night before your heaviest day, reach for nightwear.

No. The top layer wicks moisture away from your skin instantly, so you stay dry — most customers say they forget they're wearing period underwear at all.

No — the antibacterial layer neutralises odour-causing bacteria all day, which is what usually causes that worry with pads.

Soft, seamless, breathable fabric with no dioxin, chlorine or rayon — and no PFAS anywhere in the four layers, including the leak-proof shield. We hold a third-party test report confirming it. Nothing you wouldn't want next to your skin, worn like regular underwear.

No — and we've had it tested. PFAS are the “forever chemicals” sometimes used to make fabric waterproof, and they've been found in other period underwear, so it's a fair thing to ask before you buy. Kiri's leak-proof shield contains none, confirmed by third-party testing.

Yes — that's what it's built for. Daywear holds 50 ml and nightwear 75 ml, roughly 5.5 and 8.5 tampons, so a heavy day sits well within range. The moisture-wicking top layer keeps you dry rather than sitting in it, and the antibacterial layer takes care of odour. Change when the gusset starts to feel saturated, the same way you'd change a tampon — for most people that's every 8 to 12 hours, sooner on the heaviest day.

Daywear holds 50 ml (≈ 5.5 tampons); nightwear holds 75 ml (≈ 8.5 tampons). On heavier days, most people change once mid-day — just like normal underwear.

Up to 12 hours depending on your flow. You'll know it's time to change when the gusset starts to feel saturated — on light days, one pair easily lasts the whole day.

Absolutely — plenty of people start with Kiri as leak-proof backup for a tampon or cup while they're building trust in it. Most stop doubling up entirely once they've seen how much a pair actually holds.

The core handles them the same as the rest of your flow. One thing worth knowing if you're switching from tampons — you'll probably start seeing clots you never noticed before. Nothing has changed about your period; you just couldn't see them inside a tampon. It's completely normal.

Yes to both. Daywear moves with you through workouts and commutes; the high-waist nightwear pair is cut for full coverage lying down, so night one no longer means a towel on the bed.

Yes — nightwear is made for it. Pads tend to fail side sleepers because flow runs past the wings; nightwear's leak-proof shield runs up the sides and the cut sits higher at the waist, so there's no edge for it to escape past whichever way you turn. It holds 75 ml, which covers a full night comfortably.

Kiri isn't swimwear — the absorbent core would soak up the pool. Wear it to and from the water, and it'll take care of everything either side of your swim.

One of the best ways to start: nothing to insert, nothing to carry, and no uniform anxiety. Many parents buy a starter set of two to three pairs.

Yes — spotting, discharge and light leaks are all covered, and our antibacterial Daily line is made exactly for the in-between days.

Most people are covered with 3–5 pairs: day pairs, a nightwear pair, and a wash mid-cycle. Bundles are the cheapest way to build the set.

Rinse in cold water until it runs clear, machine wash inside a laundry bag, and line dry. No bleach, no tumble dryer, no iron. That's the whole routine.

Bring a spare pair and a small wet bag — that's the whole system. Rinse the used pair when you get home. Most days you won't need to: nightwear's 75 ml covers a long day out, and plenty of people plan a heavy day around one change at home rather than one in a public bathroom.

Cared for well, your Kiri stays soft, leak-proof and reliable for years — replacing hundreds of disposables along the way.

The fabric is quick-drying — line-dried overnight, they're ready by morning, which is what makes a 3–5 pair rotation work.

Check the size guide — Daywear panties run XS–L, Nightwear and Daily panties XS–XL, and bras XS–L. Between sizes? Size down for panties and size up for bras. If you're still between two sizes after your first order arrives, see our First-Pair Fit Guarantee below.

We process orders within 2 business days. After that, Hong Kong orders arrive in 2–4 business days, and Mainland China and other international orders typically take 5–10 business days. Shipping is free on orders over HK$450 to Hong Kong and Mainland China.

You're covered by our First-Pair Fit Guarantee: if the size is wrong on your first order, email hello@kirijourney.com within 14 days and we'll exchange it for a different size, free of charge — no questions asked. This applies once, to a first order, on unworn items.