# Summer NS Skin Layer P1 > Assos Summer NS Skin Layer P1 - 15% lighter, breathable second-skin with Circular Seamless Mesh and lasting odour control - Price: 74.00 CHF - Brand: Assos - Category: Underwear - Availability: in stock - SKU: P11.40.466.10.0, P11.40.466.10.II, P11.40.466.10.l ## Assos Summer NS Skin Layer P1 The Assos Summer NS Skin Layer P1 is Assos's evolved summer base layer for hot days and intense sessions on the bike. Thanks to a new textile blend, it's more elastic, more breathable, and around **15% lighter** than its predecessor, noticeably improving the wearing experience. The **sleeveless design** with raw-edge processed armholes reduces bulk under race-optimized second-skin jersey sleeves. The open-structured **Circular Seamless Mesh** promotes airflow, dries quickly, and provides permanent **odor control** through carbon-infused fibers. The deep collar shape works with both regularFit and racingFit jerseys, disappearing cleanly under your jersey. The material composition of 68% polypropylene, 29% polyamide, and 3% carbon fiber delivers an optimal balance of weight, stability, and moisture management. - **15% lighter** than the previous generation for noticeably reduced pack volume and faster drying - **Circular Seamless Mesh** with open structure for maximum airflow and comfort - **Permanent odor control** through carbon-infused yarns - **Second-skin fit** for low-volume layering and efficient **moisture regulation** - **Raw-cut armholes** eliminate overlaps under tight jersey sleeves - **68% PP / 29% PA / 3% CF** – lighter, functional material blend - Compatible with **Summer 1/3 Layering** and ideal under RS, GT, or TRAIL jerseys - Available from us in **3 variants** ## Technical Details and Features The P1 uses a **Circular Seamless** knitting process that eliminates irritating side seams and creates uniform, body-hugging compression. The more open mesh structure increases cooling airflow, while polypropylene rapidly transports moisture away from the skin and polyamide supports shape retention. Integrated **carbon fibers** provide lasting odor inhibition that persists even after washing. The **second-skin fit** prevents bunching and friction under tight-fitting jerseys, making the layer practically invisible. A deep-cut collar shape makes it easy to combine with regularFit and racingFit cuts without bulk at the neck. Compared to its predecessor, the overall weight is reduced, which particularly enhances comfort on long summer rides and in hot indoor sessions. ## Applications and Benefits The Summer NS Skin Layer P1 shows its strengths on **road bikes**, **gravel**, and **MTB** in warm to hot conditions, when breathability, moisture wicking, and quick drying are paramount. Under RS, GT, or TRAIL jerseys, it virtually disappears, stabilizing the microclimate on your torso and supporting consistent performance on long Alpine climbs as well as in flat terrain. The odor-regulating fibers keep the wearing experience fresh even on multi-day tours or during **indoor training**. The sleeveless construction eliminates material overlaps on the arms and harmonizes particularly well with aerodynamic, tight-cut jerseys. In typical Swiss summer conditions with changing elevations, the layer delivers a noticeable comfort gain without adding bulk. Independent reviews generally emphasize the benefits of lightweight synthetic base layers for sweat management and heat comfort, further supporting their use in high summer. ## Fit, Sizes and Variants The Summer NS Skin Layer P1 is designed as **second-skin**: tight-fitting, elastic, and with minimal volume for efficient **layering**. Assos offers the P1 in sizes 0 to III; the elastic circular-knit construction comfortably accommodates different body shapes. The **raw-cut** openings stay flat so nothing bulks up under straps or jersey sleeves. In our shop, the model is available in **three variants**, so you can choose the version that suits your setup. Within the Skin Layer family, there are also women-specific P1 models as well as Special Editions, if you value a coordinated look. This way you seamlessly combine function and style with your existing Assos or mixed-brand kit. ## Variants - P11.40.466.10.0: in stock - P11.40.466.10.II: in stock - P11.40.466.10.l: in stock --- Source: https://kilometro.ch/en/products/underwear-84/summer-ns-skin-layer-p1-529