SMOOTH-FIT FLOW | Leak Proof Protection

$46.00
By Midies

Size
Size Guide
Color

Smooth-Fit Flow — High Rise Period Underwear, No Bulk

No thigh chafe. No VPL. No bulky liner.

Period underwear that doesn't look or feel like period underwear. The Smooth-Fit Flow is built for light to moderate period days, light leaks, and light bladder leaks — with real protection built in, not padded on. Holds up to 15ml (equivalent to 3 tampons) in the built-in gusset lining so there's nothing extra to insert, adjust, or feel.

The gusset liner spans the full length of a long winged pad so coverage goes exactly where you need it. 6.5" inseam stops inner thigh chafe under dresses, skirts, and fitted pants. True high rise with a wide smoothing waistband — no elastic, no dig, no VPL. Just underwear that handles it quietly.

What it is: High rise bamboo period and leak underwear with built-in 15ml absorbency — designed for light to moderate period days, light leaks, and light bladder leaks without the bulk or look of traditional period underwear.

Best for: Women who want discreet period protection, a comfortable alternative to pads or liners, or everyday leak protection that looks and feels like normal underwear.

  • Built-in gusset holds up to 15ml (3 tampons)
  • Full-length gusset liner — spans a long winged pad length
  • 6.5" inseam prevents inner thigh chafe
  • True high rise, wide smoothing waistband
  • No elastic, no dig, no VPL
  • 90% Bamboo, 10% Lycra — soft, stretchy, breathable
  • If between sizes, size down

Body: 250gsm 90% Bamboo 10% Lycra Leak Liner: Top layer: Viscose/Graphene with antibacterial and odour control Absorbent layer: Polyester/Polyamide

Also searched as: period underwear no bulk, bamboo period underwear, leak proof underwear, light bladder leak underwear, period underwear that looks normal, absorbent underwear no pad, high rise period underwear no VPL.

  • 5 stars: 29 (91%)
  • 4 stars: 1 (3%)
  • 3 stars: 1 (3%)
  • 2 stars: 0 (0%)
  • 1 star: 1 (3%)
Some of the reviews shown are from related products the merchant grouped with this one.
J
Jacinta

still yet to try, but so far I love the others

J
Jacinta

brilliant

J
Jordan S.
SO comfy!

These are so soft and comfortable! I have endometriosis and pelvic congestion syndrome so a lot of undies dig in and hurt. You don’t even feel like you’re wearing anything. The period undies are also wonderful. I want to replace all my undies with these! The only thing missing is a heavy/overnight period underpants with the pad all the way up the back to wear to bed

A
Asmita G.
Best thing ever happened to me

I am a big fan. Trust me you have no idea how much I have struggled with my body and feeling uncomfortable all the time. I have pear shaped body and it was a struggle before I saw your ad on instagram.
Also not to forget how easy you have made my periods. I have tried so many of period underwear but they are very uncomfortable.
Midies are so comfortable and easy to wear.

J
Judith

Way way too big. Went by the size guide and what a surprise..... incorrect. Not impressed. Now i'll have to donate them Only tried on one pair.

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Jess K.
Just try hem you won’t go back

I highly recommend looking into the quizzes and watching videos to figure out the perfect length for yourself, I like the 7 but to be able to wear them all the time or even in summer I needed to get the 5, they are so soft so comfortable depending on whether you size down whether they will give you that extra little bit of support to smooth the stomach area, not constructing like normal shapewear, I highly recommend you just try

J
Jacqueline R.

Love my midies. Won't wear any other underwear now.

J
Janine Y.
Love my Midies, please restock

I love my high-waisted 5' Midies and live in them. The fabric is super soft, stretchy & comfy, and the high waist holds the tummy pooch in. I just wish they would be restocked more frequently. I've been waiting many months for the skin tone colours to be restocked. Some funky new colours would be great, too.

A
Alodie A.
So soft & comfy!

So soft and comfy!
It's not easy finding boy short undies anywhere for adults anymore, especially ones with soft smooth waistbands that don't have stupid elastic that digs into you. I'm so happy the Midies were as described and advertised online 💕 Would love to buy more pairs to have a pair for everyday of the week!
Thankyou! 🥰

S
Susan M.
Just fell in love!!!

Love this new range. Perfect for light leakage days. Didn’t want to try with the last days of my period (love them too much and didn’t want them wrecked in any way).

J
Jessie P.
Best feeling fabric and excellent period

Best feeling fabric and excellent period protection

A
Amanda Y.
They understood the assignment

The 2-inch boyshorts are a game changer — no riding up, no rolling down, they just stay put all day. I don’t have to constantly adjust or think about them, which is honestly rare. The best part is they don't feel like you're wearing a nappy!!

If you’ve been disappointed by others before, these are 100% worth trying. Absolute staple now.

J
Joanne K.
So comfortable

I was uncertain about buying these 5” midis but I am so glad I did. They are very light and so comfortable to wear you forget you have them on. Highly recommend you try them.

S
Sarah B.
Game changer

This is my third time purchasing midies.
Sizing is generous and SUPER comfy. I would say Im an aus 10-12 and my latest order was for size S (previously had been wearing M but found them a touch big especially towards the end of the day), I was nervous to order in a S but they are amazing. Thank you Midies. I think I now own 13 !!🫣

S
Seva H.
I purchased the L as per measurement, but it was too big around the waist was rolling and too big...

I like the style Maybe a medium would’ve been better I’m stuck with a large which I have washed a little disappointed.

K
Karen E.
Love them!

I bought one pair and they were so damn comfy I ordered 4 more!

S
Susan L.
Really comfy

Really comfy and a great option for under dresses to prevent thigh chafe in warmer weather, and protect against period leakage.

J
Jennifer Z.
Love midies.

This is my second midies purchase of smooth fit flow. They are lovely & soft. What I really like is the thick cotton gusset, great for a bit of leakage. No need for extra pads. I would love some other colors. I have been trying a few other brands to make a comparison but so far midies is the best.

D
Danielle

I absolutely love this underwear! They are incredibly breathable, I have no visible panty line, they don’t ride up my bottom and the leak proof liner is excellent. I am slowly adding more pairs to my underwear wardobe and throwing out everything that no longer sparks joy! I could probably size down next time, but they ate still awesome! Thank you 🙏🏻

D
Danielle

I absolutely love this underwear! They are incredibly breathable, I have no visible panty line, they don’t ride up my bottom and the leak proof liner is excellent. I am slowly adding more pairs to my underwear wardobe and throwing out everything that no longer sparks joy! I could probably size down next time, but they ate still awesome! Thank you 🙏🏻

D
Danielle

I absolutely love this underwear! They are incredibly breathable, I have no visible panty line, they don’t ride up my bottom and the leak proof liner is excellent. I am slowly adding more pairs to my underwear wardobe and throwing out everything that no longer sparks joy! Thank you 🙏🏻

L
Linda N.

SMOOTH-FIT FLOW 2" | Leak Proof Protection

H
Hannah F.
Excellent

A++

B
Beth C.
I love these so much

I love these so much. They’re the most comfortable undies I’ve worn since having children! Even better now with the built in leak proof gusset!

M
Margaret M.
OMG the best

I was sceptical when buying as I have wasted money in the past. These Midies are the best, no rolling up, so smooth and the gussets are fantastic. Will be buying more pairs for sure

K
Kathy

I LOVE THESE, THEY ARE THE PERFECT LADY UNDERWEAR SHORTS WITH COTTON PANTY LINER PROTECTION BUILT IN.

K
Kathy

Omg, these are the Underwear i have been looking for. I love the cotton liner and the length and the looser waste, all making the perfect underwear shorts.

S
Susan S.
Midies Flow

Cannot love these enough!! Not bulky and sooo comfortable. Will definitely be buying more

T
Tiffany R.
Smooth fit flow

Highly recommend!
I love my Midies... ticking all the boxes for me! I need to wear a liner most days, which is so easy with the gusset. I love the 7 inch longer legs (no more chaffing!), but when I reverted to period undies for the days of my period, I missed the comfort of Midies, the soft waistband and the longer legs. Now I have the best of both worlds! These new Flow period Midies are super comfy, have 6.5inch leg, worked a treat (no leaks!), and I can wear them anytime and not need a liner. Also the grey lining gives you a greater visual than the standard black so you can keep an eye on your flow (if you're into that). Would definitely buy again.

J
Joelene B.
Great quality at a reasonable price

After initially buying 5 I quickly realised I needed more of these. The longer length is great under skirts and dresses and the 5 inch is perfect under shorts. No significant riding up my thighs however it’s important to get the correct size and not go up a size because then they won’t stay put. I have also purchased 3 of the flo pairs and have comfortably worn them with no leaking. Great product that I highly recommend