FAQ
FAQs
Got questions? We've got answers.
Everything you need to know about IcySack, the 90-day protocol, and how scrotal cooling supports male fertility.
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The Product
7 questionsWhat is IcySack?+
IcySack is a scrotal cooling patch — a slim, flexible hydrogel pad infused with 0.5% w/w natural L-menthol. You apply it to the scrotum before bed, wear it for 6–8 hours while you sleep, and remove it in the morning. The L-menthol activates cold-sensing receptors in the skin to deliver a consistent pharmacological cooling effect, helping maintain the lower scrotal temperature required for healthy spermatogenesis.
Does it actually feel cold?+
Yes — but not in the way an ice pack feels cold. The L-menthol formula activates cold-sensing receptors (TRPM8) in the skin, creating a genuine cooling sensation without requiring refrigeration. Most users describe it as a comfortable, refreshing coolness rather than intense cold. The sensation typically settles into the background within 10–15 minutes of application.
The cooling effect is pharmacological, not temperature-based — which is exactly what makes it practical for nightly use.
How many patches come in each pack?+
Each pack contains:
- 1-Pack — 16 patches (~8 days using 2/day, or 16 days using 1/day at night)
- 2-Pack — 32 patches (~16 days dual use, or 32 nights)
- 4-Pack — 64 patches (~32 days dual use, or 64 nights)
For the full 90-day protocol using one patch nightly, the 4-pack is the closest match. Most customers on subscription never run out.
Does the patch need to be refrigerated?+
No refrigeration needed. The cooling effect comes entirely from the L-menthol formula — not from pre-chilling. Store the patch in the re-sealable bag at room temperature. Many customers keep it on their nightstand for easy nightly access.
Can the patch be trimmed to size?+
Yes. The patch is designed to be trimmed with scissors to fit comfortably. The hydrogel is flexible and conforms to shape naturally. First-time users: start slightly larger than you think you need, find your preferred fit, then trim from there on subsequent applications.
The re-sealable bag means you can trim part of a patch one night and save the rest — no waste.
How long does one patch last?+
Each patch delivers an effective cooling effect for 6–8 hours. This makes it ideal for nightly wear during sleep. After 6–8 hours the L-menthol is largely depleted and the patch should be replaced with a fresh one for any subsequent session.
Is IcySack a prescription product?+
No. IcySack is a non-prescription consumer wellness product. You do not need a doctor's referral or prescription to purchase or use it. However, if you have a diagnosed medical condition or are undergoing fertility treatment, we always recommend discussing any new product with your healthcare provider.
How to Use
6 questionsHow do I use the patch?+
It's straightforward:
- Open the re-sealable bag and remove the patch
- Trim to a comfortable size if needed
- Apply to clean, dry skin on the scrotum before bed
- Sleep normally for 6–8 hours
- Remove in the morning and discard
- Repeat every night for 90 days
Set a phone reminder at the same time each night — consistency is the most important factor in getting results.
Why does it need to be worn at night specifically?+
Nocturnal application was the protocol used in the SCOP clinical trial at the University of Nottingham. Sleep is also practically ideal — your body is still, heat-generating activity is minimal, and the patch can do its job undisturbed for the full 6–8 hours. Consistent nightly use is what creates the cumulative effect over the 90-day protocol.
Can I use it during the day as well?+
Yes. The SCOP trial actually recommended 2 patches daily — one during the day and one at night. If you work from home or have a sedentary job (desk work, driving), daytime use during your most sedentary hours can amplify results by counteracting heat buildup in real time. The 4-pack subscription gives you enough patches for a full dual-use protocol.
Will it disrupt my sleep?+
Most users report no sleep disruption. The adhesive is designed to be comfortable and the patch is slim and flexible. The cooling sensation typically fades into the background within 10–15 minutes of application. If you find it distracting initially, this usually resolves within the first few nights as you adjust.
What if I miss a night?+
Don't stress — just continue the following night. The protocol works through cumulative, consistent use over 90 days. Missing one or two nights won't undo your progress, but extended gaps will slow results. The key is making it a nightly habit.
If you find yourself forgetting regularly, try leaving the bag next to your toothbrush as a visual reminder before bed.
How long should I use it for?+
The recommended protocol is 90 consecutive days of nightly use. This aligns with the SCOP trial protocol and the biology of spermatogenesis — sperm take approximately 72–90 days to fully develop. One full cycle of consistent cooling is what the clinical research is built around. After 90 days, many men choose to continue as a long-term fertility maintenance routine.
Results
5 questionsHow long before I see results?+
Based on the reviewed clinical literature, some men with low sperm count (oligospermia) noted early improvements as soon as 2 weeks after starting. Statistically significant improvements in sperm count were typically observed from week 8 onwards. The full 90-day protocol covers one complete spermatogenesis cycle, which is the optimal timepoint for a full semen re-analysis.
Get a baseline semen analysis before you start, then repeat at day 90 to objectively measure your results.
How do I know if it's working?+
The most reliable way to measure improvement is a semen analysis — comparing your pre-protocol baseline to your results at day 90. Key markers to track include sperm concentration, total motility, and morphology. At-home sperm test kits (such as Legacy, Fellow, or YO Sperm Test) make this easy to do privately. Fertility clinics also offer this as a standard test.
Some men also report secondary improvements in energy and libido, as scrotal temperature is also linked to testosterone production — but the primary goal is sperm parameter improvement.
What improvement can I realistically expect?+
Clinical literature reviewed in the SCOP trial found sperm count improved in 48–66% of men studied with scrotal cooling. Six out of eight studies also showed improvements in motility and/or morphology, with improvement ranges of 28–83%. Individual results vary based on baseline health, consistency of use, and whether heat is actually a contributing factor in your specific situation. If heat is a factor, results tend to be significant. If it isn't, the effect may be more modest.
Will it help if my infertility has a different cause?+
IcySack specifically addresses heat as a contributing factor to poor sperm parameters. If your infertility has a different primary cause — hormonal, anatomical, or genetic — scrotal cooling may still provide a secondary benefit, but it is unlikely to be the primary solution. We recommend speaking with a fertility specialist to understand your specific situation before relying solely on this product.
Does it improve testosterone too?+
The SCOP trial included testosterone (along with FSH and LH) as secondary outcome measures — recognising the known link between testicular temperature and endocrine function. Scrotal heat can suppress Leydig cell function, which is responsible for testosterone production. Reducing testicular temperature may therefore support healthier testosterone levels, though this is a secondary benefit rather than the primary mechanism of action.
Safety
5 questionsIs the patch safe to use?+
The patch uses 0.5% w/w natural L-menthol — well within established safety thresholds for topical application. The product was used in a clinical trial conducted by the University of Nottingham with ethics approval from the Nottingham Research Ethics Committee. As with any topical product, discontinue use if you experience irritation and consult a healthcare provider.
Who should NOT use IcySack?+
Do not use IcySack if you:
- Have a known allergy or sensitivity to menthol
- Have undergone a vasectomy or any surgery to the genitalia
- Are under 18 or over 45 years of age
- Have a chronic medical condition such as diabetes or hypertension
- Are currently under the care of a specialist for a urological condition
Can I use it if I have a varicocele?+
Varicocele is one of the most common causes of male infertility and is directly associated with elevated scrotal temperature — making it one of the conditions where scrotal cooling may be most relevant. However, varicocele is also a medical condition that often requires clinical evaluation and potentially surgical treatment. We recommend consulting your urologist or fertility specialist before using IcySack as part of a varicocele management approach.
Can it be used alongside fertility treatment?+
IcySack is a non-prescription lifestyle product and is not a substitute for medical fertility treatment. Some men use it as a complementary measure alongside IVF preparation, IUI cycles, or other treatment. If you are undergoing fertility treatment, always inform your clinician about any products you are using so they can advise appropriately.
Are there any side effects?+
No significant side effects were reported in the SCOP clinical trial. The most common experience is the cooling/tingling sensation from the L-menthol, which is expected and normal. Rarely, users with sensitive skin may experience mild localised irritation. If this occurs, discontinue use and consult a healthcare provider. Do not use if you have a known menthol allergy.
Ordering & Shipping
6 questionsIs packaging discreet?+
Yes. All orders are shipped in plain, unmarked packaging with no indication of the product contents on the outside of the box. The billing description on your statement is also discreet. Your privacy is completely protected.
How long does shipping take?+
Orders ship within 24 hours of placement on business days. Standard shipping typically takes 3–5 business days. Expedited options are available at checkout. You will receive a tracking number by email once your order has shipped.
Do you offer a money-back guarantee?+
Yes — try it for 30 nights. If you're not satisfied, get a full refund. We stand behind the product and the science behind it. Contact our support team within 30 days of delivery to initiate a return. No questions asked.
How does the subscription work?+
Subscribe & Save gives you 15% off every order, delivered automatically every 30 days so you never run out during the 90-day protocol. You can pause, skip, or cancel your subscription at any time in just 2 clicks — no phone calls, no hassle. Subscriptions can be managed directly from your account dashboard.
What is your refund policy?+
We offer a 30-night money-back guarantee on all orders. If you're not satisfied within 30 days of receiving your order, contact our support team for a full refund. Opened products are eligible for return under the guarantee. See our full Refund Policy for complete details.
Which pack should I start with?+
It depends on your goal:
- Want to try it first? Start with the 2-pack (32 patches — covers about 1 month nightly)
- Committed to the full protocol? The 4-pack is the best value and covers ~64 nights — subscribe to auto-refill and you'll never run out
- Best value overall: 4-pack on Subscribe & Save gives you the lowest per-patch cost and automatic delivery
The clinical protocol is 90 days. Most customers need 2–3 orders of the 4-pack to complete it. The subscription handles this automatically.
The Science
5 questionsWhat clinical evidence supports scrotal cooling?+
The primary study is the SCOP trial (Scrotal Cooling Patch trial) — a randomized controlled trial conducted at the University of Nottingham and published in the peer-reviewed journal Trials (Osman et al., 2012). The trial built on a broader body of literature dating back to 1968, including eight independent studies reviewed by Mulcahy showing sperm count improvement in 48–66% of men studied with various scrotal cooling approaches. See our Science page for the full breakdown.
Why does heat damage sperm?+
The testes evolved outside the body specifically because spermatogenesis requires a temperature 1–2°C below core body temperature — approximately 34–35°C. Sperm DNA is fragile during formation, and temperatures above this range impair the process directly. Even a sustained increase of 1°C above optimal range can reduce sperm count by up to 90% over time. Modern habits — laptops, prolonged sitting, tight clothing — consistently push scrotal temperature well above this threshold.
Is heat-related sperm damage permanent?+
No — heat-related sperm damage is reversible. This is one of the most important aspects of the science. Unlike genetic or anatomical causes of infertility, heat impairment responds directly to environmental correction. When scrotal temperature is consistently reduced over a full spermatogenesis cycle (approximately 90 days), the body has the conditions it needs to produce healthier sperm parameters.
How does L-menthol cool without refrigeration?+
L-menthol activates TRPM8 — the primary cold-sensing receptor in the skin. This triggers the same neural pathway as actual cold temperature, creating a genuine and sustained cooling sensation pharmacologically. The hydrogel matrix releases the L-menthol slowly over 6–8 hours, maintaining the cooling signal throughout sleep. No ice, no refrigeration, no discomfort beyond a mild cooling sensation.
Is IcySack the same product used in the SCOP trial?+
IcySack uses the same active ingredient and delivery mechanism as the Babystart FertilMate scrotal cooling patch used in the SCOP trial — a 0.5% w/w L-menthol hydrogel patch applied nocturnally. The 90-day protocol we recommend is directly based on the SCOP trial protocol. The trial was conducted at the University of Nottingham and published in 2012 (Osman et al., Trials 13:47).
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