About
This Is Comfort Engineered From The Inside Out
TestiCool™ blends science, design, and fabric intelligence to create a cooler, healthier base layer.
Technology
Innovation built from the inside out
- Heat-conductive yarns transfer excess heat away from your core.
- AirlyCool™ waistband delivers subtle but powerful moisture control.
- Modal blend that is ultra-soft, breathable, and responsibly sourced.
- Precision construction with every seam placed for comfort.
No coatings. No gimmicks. Intelligent design woven into every fibre.
The Science
Your body runs hot. We keep it balanced.
A small rise in temperature can impact performance and comfort. TestiCool™ maintains the ideal thermal zone through airflow and engineered fabrics.
2–3°C
Rise that can reduce sperm quality. We regulate to keep you cooler.
DNA
Heat stress may impair DNA quality. Lower temperatures support better health.
Irritation
Prolonged warmth can create irritation. Airflow and moisture control reduce friction.
Support
Engineered airflow channels create a healthier microclimate at the base layer.
TestiCool™ Fabric Technology
Where science meets skin
Our fabric is intelligent. Every fibre is engineered to manage heat, moisture, and movement in harmony with your body.
By combining heat-conductive yarns, micro-modal fibres, and anatomical airflow mapping, TestiCool™ builds a fabric ecosystem that cools, protects, and performs from the inside out.
The result is underwear that feels effortless but works constantly. Comfort and performance begin at the fibre level.
SANITIZING
Silver ions actively destroy microorganisms by acting on bacterial cell walls, reducing the growth of bacteria and fungi by up to 99.9% within one hour.
ANTISTATIC
The conductive properties of silver-infused fibres absorb and disperse static electricity generated by movement or the surrounding environment.
HEAT REGULATING
Silver's high thermal conductivity helps transfer excess heat away from the body, maintaining a balanced microclimate.
REFLECTIVE & RADIATION SHIELDING
Silver infused fibres reflect radiant energy, protecting the body from excessive heat, static energy, and electromagnetic radiation (electrosmog). Acts as a natural barrier for wellbeing and balance.
ANTIBACTERIAL & DEODORISING
Silver ions inhibit bacterial growth by destroying the microbial enzyme systems responsible for odour. This permanent antibacterial function remains effective over time and after multiple washes.
ALL-NATURAL & SAFE
Made from 99.9% pure silver permanently bonded to polyamide through nanotechnology ensuring long-lasting, safe performance.
Meet the Team
Backed by experience. Built with purpose.
Award-winning designer Lahiru Fernando has spent over twenty years creating performance apparel for global brands across the UK, Europe, and the USA.
TestiCool™ is his most personal creation — born from frustration, driven by science, perfected through design. Our team has engineered award-winning solutions and some of the most comfortable, functional underwear on the market.
Men's comfort is about health, science, and self-confidence.
