SILVER UNDERWEAR WINTER LONG SLEEVE

PISSEI SILVER UNDERWEAR WINTER LONG SLEEVE (Argentum)

The PISSEI SILVER UNDERWEAR WINTER LONG SLEEVE is a technical long-sleeve base layer for cyclists who rely on dependable thermal regulation during the cooler months. The Argentum construction uses a high proportion of metallised silver fibre to strategically manage body heat while reducing odour formation. According to the manufacturer, the shirt is designed for temperatures of 6–12 °C, making it ideal for autumn days and mild winter rides in the lowlands. The material blend of polypropylene, elastane and silver provides a close fit, quick drying and comfortable skin feel at high cadences.

• Argentum silver fibre for antibacterial effect and efficient heat management
• Recommended temperature range 6–12 °C for cool to cold rides
• Quick-drying and moisture-wicking for a dry wearing experience
• Elastic one-size fit for different body types
• Developed for cycling: low-seam, comfortable feel under jersey or winter jacket

Technical Details and Functions

The composition is precisely specified: 90% polypropylene, 6% elastane and 4% metallised silver fibre, keeping the base layer lightweight while maintaining a stable fit. Polypropylene supports moisture management, while elastane increases freedom of movement and stabilises the fit. The integrated silver fibre is naturally antibacterial and can influence infrared heat radiation, supporting the body's heat balance. Care instructions are practical: wash at 30°C, no tumble dryer, no ironing – ideal for frequent training. The manufacturer's specified temperature range of 6–12°C positions this shirt as a winter base layer for moderate cold and efficiently complements your layering system.

Applications and Benefits

As the first base layer under long-sleeve jerseys or winter jackets, the Argentum shows its strengths when it's fresh to cold outside and intensity varies. In the 6–11°C range, independent guides explicitly recommend a warm winter base layer to wick sweat away from the skin and prevent cooling down. For rides below 5°C, you combine the base layer with insulating mid-layers and windproof outer layers to scale the thermal performance. This keeps you comfortable on long endurance sessions, commutes or brisk after-work rides in the Swiss winter without overheating.

Fit and Daily Care

The elastic one-size fit covers different builds and fits close enough for moisture wicking to function efficiently without being restrictive. Under close-fitting jerseys, the material doesn't bulk up and prevents friction points – especially on longer bike rides. For longevity: 30°C delicate wash, no bleach, no tumble drying and no ironing; this keeps elasticity and structure stable. Those sensitive to odours additionally benefit from the antibacterial properties of the silver fibre, which can inhibit microbial growth and thus enable a fresh wearing feel for longer.

Material Science Background (for Tech Enthusiasts)

Silver in textiles is an excellent heat and electrical conductor and can reflect or control infrared radiation, extending the body's thermal comfort zone. Studies show that silver-coated fabrics can influence IR transmission and reflection, promoting heat release or retention depending on the environment. At the same time, silver particles in textiles demonstrate proven antibacterial activity, leading to less odour formation during sweaty sessions. These effects align with the goal of a performance-oriented base layer: keep warm when necessary, and efficiently remove excess heat and moisture.