Nyssa FourthWear Postpartum Recovery Underwear

FourthWear Postpartum Recovery Underwear - Nyssa

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FourthWear Postpartum Recovery Underwear

Name: Jet Black / S/M / Underwear + Between Legs Ice/Heat Pack $53 FourthWear Postpartum Recovery Underwear
SKU: 4W-U-P-SM-BLK-01-V
Price: 53.0 USD

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Your postpartum recovery starts here — and FourthWear is built for every part of it.

Vaginal delivery or c-section, your body deserves targeted, expert-backed support during postpartum recovery. Nyssa's FourthWear Postpartum Recovery Underwear was developed in collaboration with an Innovation Advisory Board of women's wellbeing professionals — OB-GYNs, Doulas, Midwives, and Pelvic Floor Therapists — to deliver real relief exactly where recovering bodies need it most.

At the heart of FourthWear is our patented dual-layer, 360° pocket system, engineered to hold ice or heat therapy securely against the body in three critical zones:

Between the legs for perineal pain relief
At the c-section incision site for targeted scar healing
Across the lower back for postpartum back pain relief

The pocket is also designed to hold a pad on the inside of the underwear — so you can manage postpartum bleeding and apply cold or heat therapy at the same time, hands-free. No juggling. No readjusting. Just recovery.

Crafted from super-soft, adaptive compression fabric that gently hugs the belly and conforms to your changing postpartum figure, FourthWear stays smooth and seamless under clothing from day one through every stage of healing.

✔ FSA/HSA eligible

✔ Designed with OB-GYNs, Doulas, Midwives & Pelvic Floor Therapists

✔ Perineal recovery · C-section healing · Postpartum back pain · Postpartum bleeding support — all in one

What's Included

1ct and 3ct include underwear only.
Underwear + Ice/Heat Bundle includes 1 pair of underwear and 1 Between Legs Reusable Ice/Heat Pack.
3-Ct Underwear + Ice/Heat Bundle includes 3 pairs of underwear and 1 Between Legs Reusable Ice/Heat Pack.

Composition + Care

85% Recycled Polyester, 15% Spandex.
Machine wash cold.

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Pairs Great With...

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Mocha Mousse FourthWear Postpartum Recovery Underwear

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FourthWear Postpartum Bralette

What To Know & How It Works

FourthWear Underwear

Recommended for use with our uniquely contoured Between Legs and Uterine Reusable Ice/Heat Packs to support healing and provide relief EVERYWHERE.

Model in Nyssa FourthWear Postpartum bralette & underwear

Made with 4-way stretch, eco-friendly fabric that comfortably conforms to changing postpartum figures and holds ice/heat packs in place.

Model folding Nyssa FourthWear Underwear down over ice - heat pack.

Has a seamless ultra-high waist that can be worn over or under a pregnant or postpartum belly.

Nyssa FourthWear Postpartum Underwear with Ice/Heat Pack

Designed with an Innovation Advisory Board of women's wellbeing professionals, including OB-GYNs, Doulas, Midwives, and Pelvic Floor Therapists.

FourthWear Underwear

Securely holds an ice or heat pack anywhere in the garment through our patented 360° pocket design.
Recommended for use with our uniquely contoured Between Legs and Uterine Reusable Ice/Heat Packs to support healing and provide relief EVERYWHERE.
Made with 4-way stretch, eco-friendly fabric that comfortably conforms to changing postpartum figures and holds ice/heat packs in place.
Has a seamless ultra-high waist that can be worn over or under a pregnant or postpartum belly.
Full-coverage seat to hold pads in place and never ride up.
Designed with an Innovation Advisory Board of women's wellbeing professionals, including OB-GYNs, Doulas, Midwives, and Pelvic Floor Therapists.

As Featured In

"Genius"

"Game-changing"

“Revolutionary”

“Nyssa is facilitating a maternal health revolution”

Woman wearing FourthWear Postpartum Bralette & Underwear while holding baby.

Why We Love It

It's a revolution in postpartum comfort and care.

When we started Nyssa, one of the first things we wanted to tackle was the flimsy, low-functioning mesh underwear given out in hospitals. Sure, they’re free. But try wrangling a newborn while you’re wearing surgical undies that hang down to your knees under the weight of giant pads and ice packs. People who give birth deserve better. That’s why our first innovation had to be FourthWear, the world’s first luxuriously soft, eco-friendly, 4-way stretch underwear specially designed to hold an ice or heat pack in the vulva/perineal area, at the site of a caesarean incision, and everywhere else birthing people need it.

FAQs

Need support? Just ask us.

Is FourthWear Underwear for caesarean or vaginal birth recoveries?

We often don’t know exactly how our birth journey will shape up, no matter what our plans are. FourthWear Postpartum Recovery Underwear is designed specifically to provide ultimate comfort for both c-section and vaginal birth recoveries.

For vaginal recoveries, FourthWear provides a widened gusset to accommodate large postpartum pads and a comfortable high waist that can be folded down to meet the needs of changing bodies. An ice/heat pack (one of Nyssa’s specially contoured packs or one of your own) can be inserted inside the garment and placed between the legs to soothe vaginal and perineal pain, swelling, or sutures. Another pack may be placed over the abdomen or in the back to ease pain related to postpartum cramping and any other discomfort that stems from delivery.

For c-section recoveries, FourthWear provides the same functionality along with a smooth, soft fabric over the incision area. Ice/heat packs may be placed over the site of an incision to help reduce pain and discomfort and to facilitate healing of the incision area.

Is FourthWear Underwear absorbent?

Postpartum bleeding can be particularly heavy and can include discharge from the uterus, called lochia. FourthWear Underwear is not designed to be absorbent (like period underwear) but is intended to be worn with a postpartum/maternity pad (check out our Organic Cotton Extra-Long Postpartum Pads!). They are, however, leak-resistant to reduce any staining or overflow from postpartum bleeding.

Which size of FourthWear Underwear is right for me?

Figuring out the right size for your changing body might seem a daunting task. We make FourthWear Underwear with super soft, incredibly stretchy fabric that flexes and adapts to your changing figure to make it a bit easier. Whichever size you wear in maternity clothing can translate to the perfect underwear size. We recommend choosing the smaller size if you are in-between sizes. For example, if you wear a large in maternity clothing, we recommend purchasing the M/L, whereas if your maternity size is XL, then our L/XL would likely be the better fit.
Importantly, the seamless high-waist can be rolled down to maintain a tighter fit as your body changes after giving birth.

Everybody’s body is different. We all gain and lose weight throughout the birth and recovery process at different rates. For the majority of people, weight gain and loss will happen mostly in the belly region and along the hips. FourthWear Underwear is designed to change with your body; however, if a significant amount of weight is gained or lost (+80lbs), you may need to purchase an additional size.

How long should I expect to use FourthWear Underwear after giving birth?

FourthWear Underwear can be used throughout your Fourth Trimester and beyond. We specifically designed it to provide comfort and care as you continue to heal. Many people also wear it during the Third Trimester for comfort and to apply ice and heat in a variety of places (back or vulva, most commonly) to provide relief from painful pregnancy symptoms, including lower back pain, vaginal sensitivity, and cramping associated with Braxton Hicks.
Unlike other postpartum underwear, FourthWear Underwear is designed to be reusable and will last long into your postpartum recovery period and beyond.

How do I care for my FourthWear Underwear?

FourthWear Underwear can be machine washed and dried. To keep them in tip-top condition, we recommend washing on a delicate cycle with cold water and drying with low heat.

Absoultely loved this postpartum. They were comfortable and appreciated the pocket for tbe heating pack, which was so helpful because I was also managing a baby without having to worry about the heating pack staying in place!

Excellent products, service and quality.

I purchased multiple items and have been very pleased with the quality and products.

These are amazing. These paired with the Nyssa postpartum pads and even the ones the hospital sends you home with are comfortable and a great fit without fitting too snug. I am two weeks postpartum and now that the bleeding has tapered down to a light spotting, I still rock these to sleep with a light liner because they STAY comfy as heck! Also not too thick that you can’t feel the heat pack! Would recommend to all pregnant mamas!!

Recovery underwear

I bought these to wear after my Pelvic Floor reconstructive surgery. They are so soft and comfortable. Having that pocket to put the ice in down on my incision was the best. It really helped with my discomfort. I would recommend these.

Prior to my pregnancy, I was a size 26 (“4”) at Torrid. I have an apron belly (64” at my “widest,” if this helps anyone), even at 38 weeks of gestation. I typically prefer a high-leg cut underwear (from Lane Bryant, for reference), and for the band to come under my belly button. Trying these on, I felt like these were cut a bit lower than I prefer, and that the leg opening came down further, more like a full brief. HOWEVER- As of writing this review, I’m still pregnant, by baby is LOW, and I’m in a bit of discomfort. Once I’ve delivered this child, my belly is going to change, and I won’t feel as “full” through my abdomen, trying them on, so I’m proceeding this review with caution. The pockets for the cool/warm packs are GENIUS. The ONLY concern I have with the material, are my pants staying up! Overall, though, I’m impressed!

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FourthWear Underwear FourthWear Bralette

NYSSA SIZE STD. US/CAN SIZE STD. UK/AUS SIZE

XXS/XS 00-2 2-6

XS/S 2-4 6-8

S/M 4-8 8-12

M/L 8-12 12-16

L/XL 12-16 16-20

1X/2X 18-22 22-26

2X/3X 22-28 26-32

3X4X 26-32 30-36

If you're choosing between sizes, we recommend sizing DOWN for our Postpartum Recovery Underwear. The fabric is very stretchy and adaptive.

NYSSA SIZE STD. US/UK BAND SIZE STD. US/CAN SHIRT SIZE

XXS/XS 24-26 00-2

XS/S 28-30 2-4

S/M 32-34 4-6

M/L 36-38 6-8

L/XL 38-42 8-12

1X/2X 42-46 12-16

2X/3X 46-50 16-20

3X4X 50-54 20-24

Our Postpartum Bralette fits true to size.