First-drop preorder checkout for the in-sauna cooling kit.
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NUMBNUTS Duo Kit with center cooling sleeve, Chill Inserts, and insulated case
22-second hero film
NUMBNUTS center sleeve with chilled insert positioned beneath the front support pouch Center sleeve
NUMBNUTS exploded launch kit with liner, inserts, case, and guide What's inside
NUMBNUTS how it works panel showing freeze, slide, sauna, and rotate How it works

First-drop preorder

NUMBNUTS Duo Kit

$239.00

NUMBNUTS is an in-sauna cooling kit for men who love the ritual but want a cleaner way to manage below-waist heat. Freeze the inserts, load the center under-support sleeve, and rotate through sauna rounds without loose ice, wet towels, or awkward DIY fixes.

In-sauna use Center under-support sleeve 2 Chill Inserts No direct frozen contact Thermal comfort only Not a medical device
Preorder terms Payment is taken today to reserve first-drop access. Estimated shipment begins by September 30, 2026. You can request cancellation before shipment.

Launch shipment countdown

First-drop ships September 2026.

This countdown is tied to the real estimated ship month.

00days
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Thermal context, not medical advice NUMBNUTS is a comfort product with a clear sleeve barrier, time limits, and no clinical outcome claims.
Preorder clarity Before your order ships, materials, use limits, and shipment timing stay clear. If the timing no longer works, cancel before shipment.
What is inside the kit Liner with center under-support cooling sleeve, 2 reusable Chill Inserts, insulated carry case, and first-use guide.
Why the standard kit has 2 inserts Two inserts give the core user one active insert and one backup for rotation. The 4-insert option is for longer sessions or buyers who want fewer freezer resets.
Before payment checklist Confirm preorder timing, cancellation terms, final materials, sleeve barrier, and use limits. NUMBNUTS is for thermal comfort only and is not a medical device.
First-use rhythm Freeze insert, load the center sleeve, wear only during sauna rounds, rotate if needed, then remove after the session. Never sleep in the product or apply a frozen insert directly to skin.
Preorder - pay now 100% paid at checkout. Estimated shipment timing is shown above.

Checkout will show this as a preorder purchase option before payment.

Before payment

Exactly where the insert goes.

The product is sold through clarity: center placement, visible barrier, simple kit contents, and direct use limits.

Technical diagram showing the center under-support cooling sleeve 01 Center placement
Exploded NUMBNUTS launch kit 02 Full launch kit
Instruction card showing slide into internal pouch 03 First-use card