NUMBNUTS
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Desk day? Start here.

Your lap isn’ta laptop stand.

Your work gets enough of your day. Your lap does not need the laptop too. Start with the heat habit, then consider the layer underneath: merino, natural rubber and reusable cooling.

Take The Nuts Check

8 questions. Email may be required for results. Marketing updates optional.

Already know you want the cooling bundle?
NUMBNUTS merino cooling boxer shown with its branded waistband and cooling insert
Cool where it counts.One boxer. Two inserts. Product visualisation.
100% merino bodyNatural rubber waistbandTwo reusable cooling inserts

Look at the whole day

Does this sound
like your routine?

The Nuts Check asks about habits you can change. It does not measure temperature, microplastic exposure or sperm quality, and it does not diagnose fertility.

  1. The lap office.

    Your laptop has a desk available. Somehow your thighs keep getting the job. Start with where the heat source sits.

  2. The chair shift.

    Work, commute, sofa. Sitting can fill most of the day without feeling like one long stretch. Think about the breaks between them.

  3. The label blind spot.

    You know your phone model. Do you know your boxer fabric? Check the label and how your everyday routine feels.

Check my routine

Practical next steps. Relevant product options. Not a fertility test.

If cooling is the route for you

A boxer built to cool.

Better fabric is the starting point. Targeted cooling is the extra. One merino boxer, a natural-rubber waistband and two reusable inserts. Choose your size, then review the one-time preorder.

  • One 100% merino boxer, including the merino sleeve.
  • Natural rubber waistband.
  • Two reusable cooling inserts. No extra cases or accessories.
$69.00

$0.00 today
Scheduled billing: 30 November 2026.

See sizes and reserve

Target dispatch: November 2026, subject to confirmation. Delivery charges shown at checkout. Your payment method is saved for scheduled billing.

Detail of the NUMBNUTS merino boxer, waistband and centre cooling sleeve

Question the habit. Check the evidence.

The heat question
is worth asking.

Researchers have studied scrotal temperature during laptop use. That supports asking where you put the laptop. It does not prove our boxer changes sperm quality or fertility.

Read the laptop-temperature study

Independent laptop-use research. Not a trial of NUMBNUTS, our inserts or our quiz. Our product is not a fertility treatment.

The details matter

Before you commit.

The NUMBNUTS founder

Your standards should not stop at your waistband. Start with natural fibres. Add targeted cooling if that is what you came for. The choice is yours, not your quiz score's.

What will my Nuts Check tell me?

It highlights the heat and fabric habits you report and gives practical next steps. It does not measure temperature, sperm quality or fertility.

When do I pay, and when does it ship?

Nothing is charged today on this charge-later preorder. Your payment method is saved for scheduled billing on 30 November 2026. Target dispatch is November, subject to confirmation. Delivery charges are shown at checkout.

Preorder terms
What about the offer and guarantee?

FOUNDER15 is a cooling-bundle offer only, when active and eligible. It is not a three-pack discount. The 60-day first cooling-bundle guarantee starts after delivery and follows the published policy. Read its eligibility and refund conditions before ordering.

Refunds and guarantee