# Spring Fall SS Skin Layer P1

> Assos Spring Fall SS Skin Layer P1 - Lightweight second-skin base layer, breathable, warming at front, ventilated at back, lasting odour control.

- Price: 93.00 CHF
- Brand: Assos
- Category: Underwear
- Availability: in stock
- SKU: P11.40.452.1P.0, P11.40.452.1P.II, P11.40.452.1P.I

## Assos Spring Fall SS Skin Layer P1

The Assos Spring Fall SS Skin Layer P1 is the functional foundation for rides in cool spring and autumn conditions – newly developed with higher **breathability**, more **collar coverage** and reduced weight compared to the previous generation. The short-sleeved functional underwear fits close with a **second-skin fit** and creates a warm, dry **microclimate** without bulking up under your jersey. A tighter woven front panel increases **insulation** at the chest area, while the back and underarm zones with more open structure actively release excess heat. Carbon fiber content in the yarn provides lasting **odorControl**, keeping it fresh even on long climbs.

- 15% lighter than its predecessor, while simultaneously offering increased neck coverage and optimized fit.
- **Body-mapping**: tighter woven front for warmth, more open back and underarm zones for **ventilation**.
- **Second-skin fit** with one-piece, **seamless** construction against chafing.
- Lasting **odorControl** through **carbon fiber** content in the textile.
- Material mix: 71% polypropylene, 22% polyamide, 4% elastane, 3% carbon fiber.
- Developed as a first layer for cool conditions; ideal under **Spring/Fall** jerseys or jackets.

## Technical Details and Functions

The P1 generation uses a structured knit pattern: denser at the front for more **thermoregulation**, more airy at the back and under the arms for efficient **moisture management** and **heat regulation** at high pace. The one-piece, low-friction construction follows Assos' **Circular Seamless** philosophy and fits evenly against the body, which additionally supports the **push-pull** wicking of sweat under the jersey. The **second-skin fit** minimizes volume, improves layering and supports a consistent microclimate on road bike and gravel rides alike. The material mix with **carbon fibers** delivers inherent, permanent odor control without compromising the softness of the fabric.

## Applications and Benefits

This baselayer is made for changeable Swiss **spring/autumn** days – from cool Zurich commuter mornings to shady descents from alpine passes. Under light **Spring/Fall** jerseys or jackets, it barely adds bulk, keeps the torso strategically warm and prevents simultaneous overheating on climbs. Thanks to the open structures at the back, it actively regulates body heat and dries quickly, which is a noticeable advantage especially during intervals and changing winds. When needed, it can easily be combined with a **rain shell** or additional **ASSOSOIRES** without restricting freedom of movement.

Optional: Variants and Layering Tips

We have the Spring Fall SS Skin Layer P1 available in three variants, so you can combine appropriately depending on use and wardrobe. As a first layer, it closes cleanly with the collar of many **Spring/Fall** jerseys, the extended collar coverage additionally protects the neck area. For very windy days, we recommend combining it with a light vest or compact **rain shell** to further calm the front area. This keeps your **microclimate** stable even on long, cool rides and comfort high – whether on the road bike, gravel riding or commuting to work.

## Variants

- P11.40.452.1P.0: out of stock
- P11.40.452.1P.II: in stock
- P11.40.452.1P.I: in stock

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Source: https://kilometro.ch/en/products/underwear-84/spring-fall-ss-skin-layer-p1-490