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FourthWear Postpartum Recovery Underwear

$38 or 3 for $99

A baby registry and Fourth Trimester essential— our buttery-soft, belly hugging underwear with our patented pocket design to securely hold ice or heat therapy between the legs and over the lower abdomen where postpartum recovering bodies need it most.

Designed in collaboration with OB-GYNs, Doulas, Midwives, and Pelvic Floor Therapists.

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Color Jet Black
Jet Black
Size
– +
Composition + Care Shipping Gift Wrapping
  • 85% Recycled Polyester, 15% Spandex.
  • Machine wash cold.
  • Made in the United States from imported materials.

Ships in 1-2 business days.

Tote + Note - $9

Add one of our signature totes and a handwritten gift message on a beautiful hand made postcard by Willowcrest Press, to your order. Please do not forget to leave your message at checkout.

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Pairs Great With...
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Between Legs Reusable Ice/Heat Pack
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Organic Cotton Extra-Long Postpartum Pads

What To Know

FourthWear Underwear
  • Securely holds an ice or heat pack virtually anywhere in the garment through our patented pocket design.
  • Recommended for use with Nyssa’s uniquely contoured Between Legs and Uterine Reusable Ice/Heat Packs.
  • Made with 4-way stretch, eco-friendly fabric that comfortably conforms to changing postpartum figures.
  • Has a seamless ultra-high waist that can be worn over or under a pregnant or postpartum belly.
  • Widened gusset and full seat to hold postpartum pads in place and never ride up.
  • Designed with an Advisory Board of medical professionals, including OB-GYNs, Pelvic Floor Therapists and Cryotherapists.
As Featured In

"Genius"

"Game-changing"

“Revolutionary”

“Nyssa is facilitating a maternal health revolution”

Why We Love It

Bye-bye mesh undies!

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 we created the world’s first eco-friendly, super stretchy underwear specially designed to hold an ice or heat pack in the vulva/perineal area or at the site of a caesarean incision.

#GoFourth with ultra-soft, OB-GYN-approved underwear that helps your brilliant body heal faster.

Fourthwear

We designed our collection of FourthWear Postpartum Recovery apparel and care items after being let down by the lack of functional, comfortable, and effective products available to help us heal postpartum. Birth demands a lot from women— it’s time to demand better care when it comes to our recoveries.

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RECOMMENDED FOR USE WITH

Between Legs Reusable Ice/Heat Pack

A premium reusable ice/heat pack uniquely contoured to fit between the legs to soothe the perineal region or area of cesarean incision. Whether you’re dealing with swelling, sutures, or general soreness, our Between Legs pack is an essential part of your arrival survival kit.

Shop Between Legs Pack
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.

Customer Reviews

Learn More At

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FourthWear Underwear FourthWear Bralette
Nyssa Size Equivalent Maternity Size
XXS/XS 00-2
XS/S 2-4
S/M 4-8
M/L 8-12
L/XL 12-16
1X/2X 18-22
2X/3X 22-28

If you're choosing between sizes, we recommend sizing DOWN for our postpartum recovery underwear.

Nyssa Size Under Bust (IN) Standard US/UK Band Size
XXS/XS 22"- 26” 24-28
XS/S 23"- 28" 28-30
S/M 26"- 30" 32-36
M/L 27"- 32" 34-38
L/XL 28"- 34" 38 - 42
1X/2X 32" - 38" 42-50
2X/3X 38" - 44" 46-54

If you're choosing between sizes, we recommend sizing UP for our postpartum recovery bralette.

Finding the right fit can be challenging. Need some help?

Take the Sizing Quiz

VieWear Underwear
Nyssa Size Waist Hip Front Rise
TEEN S 21” 25” 8.3”
TEEN M 23” 27” 8.7”
TEEN L 25” 28.9” 9.1”
XS 27” 30.8” 9.5”
S 29” 32.8” 9.8”
M 31” 34.8” 10.2”
L 33” 36.7” 10.6”
XL 35” 38.7” 11”
1X 37” 40.6” 11.3”
2X 39” 42.6” 11.71”

VieWear fits true to size.

Finding the right fit can be challenging. Need some help?

Take the Sizing Quiz

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