Summer Arm UV Protector P1

Assos Summer Arm UV Protector P1

The Assos Summer Arm UV Protector P1 are ultralight arm sleeves for hot days, offering reliable UPF 50+ sun protection without compromising airflow. The actively cooling, ultra-breathable fabric sits close to the skin with minimal bulk, feels like a second skin, and packs down compactly into your jersey pocket. Available in blackSeries and White Series, in sizes 0, I, II – perfect if you want to keep your kit lean and versatile. Designed for road, gravel, trail, and triathlon, they cover the full range of typical Swiss riding scenarios, from the daily commute to alpine pass adventures.

• UPF 50+ for reliable sun protection on long summer rides
• Ultra-breathable, actively cooling fabric for noticeable comfort in the heat
• Low-volume construction with a second-skin fit
• Compactly packable – fits easily into your jersey pocket
• Two colorways: blackSeries and White Series
• Sizes 0 / I / II – six variants in total
• Designed for road, gravel, trail, and triathlon

Technical Details and Features

The arm sleeves are made from 89% polyamide, 8% polyester, 3% elastane, delivering a lightweight fabric with a stable shape and comfortable stretch. The declared UPF 50+ rating corresponds to blocking approximately 98% of UV radiation, significantly reducing your sun exposure. At the same time, the actively cooling fabric keeps your skin feeling dry when summer temperatures really climb, while remaining soft against the skin. The low-volume construction minimises bunching at the transition to your jersey, letting the sleeves disappear seamlessly under your kit. The design was deliberately built around versatility and everyday usability, so you can quickly pull the sleeves on or off and stash them in your pocket whenever needed.

Use Cases and Benefits

Whether it's a quick after-work ride along Lake Zurich, long gravel gravel tracks through the Mittelland, or extended passes through the Alps: the Summer Arm UV Protector P1 delivers consistent UV protection at minimal weight. You'll cut down on constantly reapplying sunscreen to your arms while keeping your skin noticeably cooler when the sun is blazing. Thanks to the second-skin fit, the sleeves stay securely in place even as your effort level changes – no slipping, no bunching. The combination of breathability and UPF 50+ makes them a smart addition to any summer setup, from road to triathlon. And because they pack down so small, they work as a permanent "always-in-the-pocket" piece that fits into virtually any jersey pocket.

Colorway and Sizing Tips

You can choose between blackSeries and White Series, each available in sizes 0, I, II – covering a wide range from slimmer to more muscular forearms. Lighter colors often feel subjectively cooler in direct sunlight, while darker shades tend to absorb more UV radiation and therefore typically block it even more effectively. That's why riders heading into high-alpine terrain with intense radiation often reach for blackSeries, while White Series can feel refreshingly cool on scorching tarmac days. If your arm circumference falls between two sizes, size down for a tighter compression fit (for an aero feel) or size up for a more relaxed feel (for maximum comfort). This ensures the sleeves align seamlessly with your short-sleeve jersey, leaving no gap for the sun to sneak through.