Cramp Stamp Instant Heat Patches - Nyssa

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Cramp Stamp Instant Heat Patches

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Up to 8 hours of portable, wearable heat therapy — whenever and wherever period pain strikes.

No cords. No microwave. No staying home. Nyssa's Uterine Air-Activated Heat Patches deliver targeted, long-lasting relief from period cramps, endometriosis pain, and postpartum uterine discomfort in a sleek, wearable format that goes wherever your day takes you.

Each pack includes five uniquely contoured heat patches that activate the moment they hit the air — conforming to the lower abdomen for focused uterine relief that lasts up to 8 hours straight. Think of them as a traveling heating pad that fits discreetly under your clothes, so no one knows it's there.

Two ways to wear them, your way:

Slip inside the pocket of any Nyssa VieWear Period Comfort or FourthWear Postpartum Recovery underwear or leggings for hands-free, no-adhesive comfort
Stick directly to any undergarment with the adhesive backing for a secure, customized fit

Whether you're at the office, on the go, or just trying to get through the day, these patches make it possible to manage period and endometriosis pain on your terms — without slowing down.

✔ FSA/HSA eligible

✔ Professionally referred

✔ Period cramps · Endometriosis pain · Postpartum uterine cramping · On-the-go relief — all in one

What's Included

1ct includes 5 air-activated cramp stamp heat patches. One-time use.
3ct includes 15 air-activated cramp stamp heat patches. One-time use.

Composition + Care

Remove from protective wrapper, unfold, and feel the press start to warm to a maximum temperature of 136 degrees Fahrenheit.
Place inside front pocket of Nyssa underwear or leggings or adhere to outside of any underwear, front or back.
Use once and then discard.
Do not microwave.
Do not place directly against skin.
Contents: Iron, Water, Kieselguhr (diatomaceous earth), Activated Charcoal, Sodium Chloride.

Shipping

Ships in 1-2 business days.

Gift Wrapping

Tote + Note - $9

Add one of our signature totes and a handwritten gift message to your order. Please do not forget to leave your message at checkout.

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Pairs Great With...

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Day-To-Night Organic Cotton Cover Period Pads Bundle

Select a Size

VieWear Period Comfort Underwear + Uterine Ice/Heat Bundle

What To Know

Cramp Stamp Instant Heat Patches

Nyssa Uterine Heat Press in Interior Pocket of VieWear Period Comfort Underwear

Recommended for use with Nyssa’s VieWear Period Comfort Underwear and Leggings or FourthWear Postpartum Recovery Underwear.

Dimensions and features of Uterine On-The-Go Heat Press

Extra-long, contoured shape to sit below that natural curvature of a woman’s belly and deliver targeted heat therapy to the uterus and ovaries, allowing free movement and comfort while sitting.

Woman inserting Uterine Heat Press into VieWear Underwear

Lightweight and less than 0.15 in/ 0.38 cm in thickness.

Woman jumping with Uterine On-The-Go Heat Press in VieWear Underwear

Stays in place inside the front pocket of any Nyssa underwear or leggings, with the added security and flexibility of adhesive backing.

Also recommended for use postpartum, post-surgery, or any time your body needs a little TLC.

Cramp Stamp Instant Heat Patches

Recommended for use with Nyssa’s VieWear Period Comfort Underwear and Leggings or FourthWear Postpartum Recovery Underwear.
Extra-long, contoured shape to sit below that natural curvature of a woman’s belly and deliver targeted heat therapy to the uterus and ovaries, allowing free movement and comfort while sitting.
Lightweight and less than 0.15 in/ 0.38 cm in thickness.
Stays in place inside the front pocket of any Nyssa underwear or leggings, with the added security and flexibility of adhesive backing.
Also recommended for use postpartum, post-surgery, or any time your body needs a little TLC.

Woman inserting Nyssa Uterine On-The-Go Heat Presses

Why We Love It

Like a traveling heating pad.

We get it. Period and pelvic pain are the pits– sometimes worse than the pits. And yet we’re meant to carry on. Our slim and sleek heat patches discreetly fit into the pocket of any Nyssa underwear or leggings to stay in place and deliver penetrative heat therapy to women’s lower abdomen and uterus. They also feature an adhesive backing so that they can be worn on top of any underwear, front or back.

Be unstoppable– wherever your life takes you.

FAQs

Need support? Just ask us.

Can the Cramp Stamp Instant Heat Patches be used directly on the skin?

Yes. However, placing any heat press directly on the skin can cause tissue damage, particularly for sensitive areas. For heat therapy specifically, please make sure that you safely and thoroughly test the temperature of your pack prior to placing it directly against your skin.

What makes the Cramp Stamp Instant Heat Patches different from the Uterine Reusable Ice/Heat Pack?

While both items are uniquely contoured to sit over the uterus and ovaries, our Cramp Stamp Instant Heat Patches are lighter and more discreet, so you can easily wear them while working, exercising or generally on-the-move. If you require heat but don’t have access to a microwave, that’s no problem— they are air-activated! Pop one into your purse and power through period pain, wherever the day takes you.

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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.