However you gave birth, you will need time and care as you recover.

Hospitals recommend using an ice pack to soothe the pain and discomfort associated with childbirth, but we can tell you from personal experience that it’s pretty much impossible to keep those things in place once you start moving around during your daily activities. Our patented FourthWear® Underwear is designed to hold an ice or heat pack anywhere in the body of the garment, so it’s perfect for assisting in recovery following all birth journeys.

FourthWear® Underwear is made from leak-resistant material. They are more absorbent than regular cotton underwear but they do not absorb the quantity of blood one might experience during a heavy cycle. For heavy discharge, we recommend placing a Nyssa Organic Cotton pad on top of the gusset.

Nyssa FourthWear® and VieWear™ Leggings can accommodate any brand of ice pack up to six inches wide. We created our FourthCare™ perineal ice/heat packs with a tapered design to fit perfectly in the perineal area and they also are the designed for covering a cesarean delivery incision area. The VieCare Ice/Heat pack is the first to be shaped to give uterine relief most directly. These can be purchased separately here.

You can insert the ice/heat pack through the pocket opening and place directly inside the specially-widened gusset, where it will stay in place. If you are bleeding and require a pad, simply put the pad on top of the gusset as you usually would.

Yes! Of course if you use an extremely thick pad the effect will be minimized. But you can still feel the ice/heat through a regular sized pad or pantyliner, if needed.

We recommend microwaving for 10 seconds and checking the heat level. If you would like the pack to be warmer, heat for a further 5 seconds and check again, continuing with intervals of 5 seconds until desired temperature. Overheating can melt the pack!

We recommend freezing for 1 hour and checking the cooling level. 

Unlike mesh, FourthWear® Underwear is non-disposable and is intentionally designed to accompany you through your postpartum recovery and beyond. Most women find that three pairs work well, so that you always have a pair on hand even on laundry days.

Nyssa currently carries sizes XXS/XS, XS/S, S/M, M/L, L/XL, 1X/2X and 2X/3X in FourthWear® Underwear.

Our FourthWear® Bralette is available in size XXS/XS, S/M, L/XL, 1X/2X and 2X/3X. 

We currently carry sizes XS, S, M, L, 1X, 2X and 3X for VieWear™ Underwear.

If you don’t see your size, please e-mail us at Thank you!

We purposefully created FourthWear® Underwear with grouped sizing (XXS/XS, XS/S, S/M, M/L, L/XL, 1X/2X, 2X/3X) to make this decision easier since our bodies continue to change after giving birth. We recommend choosing the size that you’re currently wearing in maternity.

Keep in mind that the top of FourthWear® Underwear is not only super stretchy but can also be folded over to suit your preference.

Check out our Sizing Quiz here!

Please do! They are the perfect gift for anyone preparing for healing below-the-belt. 

You can choose to send an electronic gift card and your friend can choose their own size! Or purchase the product as normal and leave a gift message at checkout. Please sign your gift message, and we will include it in your package- without any receipts.

You can exchange apparel and other items with free shipping by emailing us at Unfortunately, we do not offer returns on FourthWear Underwear or FourthCare Postpartum Pads, we are only able to exchange for different sizes on the underwear.

However, we can issue store credit for returned underwear, please just contact us at with details and please be sure to include your order number. 

If you purchased with ROUTE shipping insurance, your claim will be filed directly through them. They will replace your order and send directly to you. Please follow the links in your ROUTE confirmation email. 

If you didn’t purchase using ROUTE, please contact us directly at

Please hand wipe with a rag and your favorite product, that you would use on a window.

Machine wash in cool water and dry on low heat. Do not iron, do not bleach. Spot treat stains if needed. 

We offer free shipping on orders over $75.

Orders are processed within 24 hours from when they are received, Monday - Friday. If received after 2p on Friday, the order will be processed the following Monday.

We offer international shipping with DHL.

Nyssa means ‘new beginnings’ in Greek and is derived from the word ‘woman’ in Arabic. Our name captures our desire to support women during times of physical and emotional transformation.

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We will do our best to respond within 48 hours, we are a small team but please know that you are a priority!