Summer Cap Foil P1

Assos Summer Cap Foil P1

The Assos Summer Cap Foil P1 is the updated, seamless summer cap with ultra-breathable UV protection that keeps your head cool and dry on hot rides. Designed for peak performance in summer weather, it combines a low volume with fast-drying ventilation, making it virtually unnoticeable under your helmet. The cap is offered in the Grey Series and is aimed at riders looking for a lightweight, functional base layer for the head. Available in two variants (size I and II), so you can optimally adjust the fit to your head circumference. The technical material setup consists of 66% polypropylene, 19% polyester, 10% polyamide and 5% elastane, which ideally balances breathability and shape retention. This blend supports moisture management and ensures that sweat drops no longer run into your eyes on long summer climbs.

• Seamless low-volume construction for maximum wearing comfort under the helmet
• Ultra-breathable and fast-drying fabric for hot days
• Available in two sizes (I/II) for a precise, stable silhouette
• UV protection for exposed conditions on long summer rides
• Grey Series colour palette – subtly combinable with any kit
• Robust material mix (66% PP / 19% PL / 10% PA / 5% EA) for durability and performance
• Designed to be worn under the helmet as part of a well-thought-out layering system

Technical Details and Features

The Summer Cap Foil P1 uses a seamless knit construction with minimal material application, reducing pressure points and friction between head, cap and helmet padding. The airy textile promotes active moisture wicking and dries quickly, ensuring consistent comfort during intervals, mountain passes or hot city stages. Thanks to its low volume, it sits securely without adding bulk and remains virtually unnoticed even on rough roads. The material composition of polypropylene, polyester, polyamide and elastane is designed for durability and a pleasant feel against the skin. The model also offers UV protection to provide additional relief for sensitive areas of the head during intense sun exposure. The package is rounded off by the choice of size I or II, so the cap fits cleanly and stays reliably in place.

Areas of Use and Benefits

Whether it's a quick after-work ride around Lake Zurich, long Alpine passes or daily commuting: this cap plays to its strengths whenever temperatures rise. Worn under the helmet, it supports stable climate regulation, minimises sweat running into your eyes and thus improves visibility and concentration on the bike. On gravel and gravel tours, you also benefit from the seamless construction, which remains comfortable even with vibrations. The fast-drying properties make it ready for use again quickly after short washes, ideal for training blocks or cycling holidays. Thanks to the subtle Grey Series, it can be combined with practically any jersey without visually dominating. As a head covering worn under the helmet, it sensibly complements your setup and fits seamlessly into your layering.

Also practical for everyday use in Swiss weather changes is the modular use in the ASSOS layering system: lightweight caps and headbands are designed to specifically extend the protection and comfort zones on the head without adding unnecessary bulk. This way you stay efficient for longer when wind picks up, sun intensifies or temperatures change, without affecting helmet or glasses fit. The Summer Cap Foil P1 fits in here as a 1/3 summer essential that can be easily coordinated with jerseys, base layers or neckwear. In addition, ASSOS offers a 2-year warranty, which underlines the development focused on durability. If you're looking for a functional, minimalist solution for hot days, you'll find an effective detail with great impact here.