# UZ 3/3 LS Skin Layer P1

> P11.40.455.29.0 UZ 3/3 LS Skin Layer P1 - Warmest merino skin layer, seamless, high rollable collar, close-fitting design for cold winter rides

- Price: 136.00 CHF
- Brand: Assos
- Category: Underwear
- Availability: in stock
- SKU: P11.40.455.29.0, P11.40.455.29.I, P11.40.455.29.II

## UZ 3/3 LS Skin Layer P1

The UZ 3/3 LS Skin Layer P1 is the warmest base layer in the ASSOS Skin-Layer family and was developed for **extremely cold winter days** on the bike in Switzerland. The highly elastic **wool blend with merino wool** provides close-to-body insulation, while the **ultra-high collar that can be used as a turtleneck** noticeably extends the protection area. The **one-piece, seamless Second‑Skin construction** minimises friction and supports a dry-warm microclimate directly on the skin. In the ASSOS climate classification, it's the **3/3 Winter** layer; available in three sizes (0–II).

- Ultra-high, rollable **collar** for additional protection of neck and nape.
- Body fabric with **50% PP / 31% WO / 10% PA / 6% EA / 3% CF**, neck fabric with **91% PP / 6% EA / 3% CF**.
- Permanent **odorControl** thanks to integrated **carbon fibres** and merino properties.
- **Seamless** one-body construction with **Second‑Skin fit** and **Push‑Pull** moisture management.
- Developed as the warmest **Skin Layer** option for **Ultraz / Deep‑Winter** applications.
- Available in three sizes (0–II) for close-fitting, layering-suitable fit.

## Technical Details and Features

At its core, the UZ 3/3 LS Skin Layer P1 uses an **ultra-soft, breathable yarn blend** with merino wool, polypropylene and **carbon fibres** that retains heat and reduces odour formation. The main body consists of 50% polypropylene, 31% wool, 10% polyamide, 6% elastane and 3% carbon fibre; the collar relies on 91% polypropylene, 6% elastane and 3% carbon fibre for elasticity and shape stability. Through the **close-fitting Second‑Skin fit**, thermoregulation and moisture transport are optimised so that a **dry-warm microclimate** forms under jacket or thermal layer. The **one-piece, seamless** design reduces chafing points, follows every movement and maintains its shape even when stretched.

## Applications and Benefits

As the first layer directly on the skin, this layer is made for **deep winter**, cold winds and long base training rides as well as for intensive training in dry cold. In combination with a winter jacket, it forms a very efficient system that **retains heat** while simultaneously **wicking away sweat quickly**, so you don't get cold. Within the ASSOS system, "3/3" stands for the coldest conditions, while the **Ultraz** version offers even more insulation reserve thanks to the merino blend. Specialist media highlight the **high wearing comfort**, the **raised collar** and the first-class fit of the ASSOS winter skin layers, which confirms the practical benefit in everyday life for cyclists in Switzerland.

## Care, Fit and Layering Tips

For maximum performance, the layer should be worn **close to the body** and combined with wind- and weatherproof outer layers, depending on intensity and altitude in the Zurich lowlands or on wintry Alpine passes. The Second‑Skin fit is designed to **not bulk up under jackets** and maintain freedom of movement. ASSOS clearly positions the Skin‑Layer collection according to seasons; the UZ 3/3 P1 is the warmest level and thus the logical partner for winter jackets and Ultraz accessory layers. Independent reviews of the ASSOS Winter‑Skin‑Layer line emphasise the focus on **comfort, warmth and moisture management**, which makes all the difference especially on long rides in cold conditions.

## Variants

- P11.40.455.29.0: in stock
- P11.40.455.29.I: in stock
- P11.40.455.29.II: in stock

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Source: https://kilometro.ch/en/products/underwear-84/uz-33-ls-skin-layer-p1-488