ASSOS Ultraz Winter Socks P1 Black Series
The ASSOS Ultraz Winter Socks P1 are high-insulation cycling socks designed for the coldest winter conditions. Their construction combines maximum warmth with high breathability to help maintain a dry, comfortable microclimate during long rides in low temperatures.
A blend of synthetic fibres and merino wool provides insulation, stretch, and natural odour resistance while retaining warmth even when wet. Triple-layer construction around the toes and midfoot increases protection in the most exposed areas, while the higher cuff extends coverage up the lower leg to reduce gaps between winter layers.
Key features
- Maximum insulation for extreme winter conditions
- Merino wool blend for natural warmth and odour resistance
- Retains insulating properties when wet
- Triple-layer insulation at the toes and midfoot
- Highly breathable construction
- 160-needle seamless knit
- Light compression for stable support
- Higher cuff for additional winter coverage
Product specifications
- Temperature range: +4°C to +11°C
- Riding conditions: Cold
- Fit: regular
- Breathability: 4/5
- Insulation: 5/5
- Windproof: 1/5
- Quick drying: 2/5
- Cuff height: up to 18cm / 7in
Composition
- 45% Polyester
- 32% Polyamide
- 20% Wool
- 3% Elastane
Size & fit
The 160-needle seamless construction wraps the foot with light compression for secure support without restrictive pressure. Triple-layer zones increase warmth without adding unnecessary bulk throughout the rest of the sock.
Care & washing instructions
Machine wash cold on a gentle cycle. Do not bleach, tumble dry, iron, or dry clean. Air dry to help preserve the wool fibres, elasticity, and insulating performance.
Product-id: P13.60.791.18.0
- Order before 16:00 CET, and your order gets shipped the same day.
- We use premium shipping carriers, yet offer low free-delivery thresholds.
- Return hassle-free in-store, or via drop-off or pick-up via our partners PostNL and Returnista.
- Troubles? As Maats values sustainability & durability, we will carefully try repair your product, for free.
- Troubles beyond repair? We will personally assess your case and find the most suitable solution.















