How often should I use this, and how long does it take to see improvements?

Hi! Use The Underdog throughout your day whenever sitting for longer than 15-20 minutes (temperature danger zone). e.g. when driving, sitting at work, and relaxing at home. Sperm take roughly 2 ½ to 3 months to fully mature. So any healthy lifestyle changes including using The Underdog may take this long to show up in improvements to sperm count or quality. We'd love if you visited our blog for more tips to improve your swimmers.

Can this be used when riding bicycle?

Its pretty small and compact. I'm not 100% sure, but I would say yes.

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❄️ Cool down your fertility game — because every degree counts!

EASY PORTABLE - Lightweight 295g design perfect for office, driving, or home use anytime
SCIENTIFICALLY BACKED - Targets heat-induced infertility by reducing testicular overheating from sitting
DISCREET COMFORTABLE - Soft, adaptable sleeve fits seamlessly under clothing for daily use
EXTENDED COOLING POWER - Dual ice packs ensure longer, uninterrupted cooling sessions
OPTIMAL TESTICULAR TEMPERATURE - Maintains the ideal 34°C/93°F to maximize sperm quality and count

The UnderdogMale Fertility Cooling Kit is a scientifically designed solution to combat heat-related male infertility by maintaining the testicles at an optimal 34°C/93°F. Lightweight and ergonomically crafted, it includes two reusable ice packs and a soft sleeve for comfortable, discreet use during prolonged sitting. Ideal for men seeking to improve sperm quality and count naturally or as a supplement to fertility treatments.

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Manufacturer	Underdog Fertility
Part number	UK1
Item Weight	295 g
Product Dimensions	11.43 x 4.57 x 4.06 cm; 295 g
Manufacturer reference	UK1
Material	Polyethylene or Polyurethane
Item Package Quantity	1
Noise Level	15 dB
Batteries included?	No
Batteries Required?	No

Underdog Male Fertility Cooling Kit: Boost

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