Hot weather riding exposes a small gear problem most people don't think about until they're an hour into a climb with sweat pouring into their eyes: what you put under your helmet matters. The Summer Cap Foil P1 is Assos' ultralight summer cap, designed to maximize comfort in hot conditions with a low-volume, seamless construction and hyper-cooling, fast-drying breathability. It's the piece that lives in the back of your jersey pocket from May through September and earns its keep on every hot day.

The construction is where this cap differs from the cotton cycling cap your local club hands out. Tubular jersey technology with no side seams creates an ultrasoft feel against the head, and the polypropylene fiber Assos uses here is among the lightest and most hydrophobic fibers available, which gives the fabric its push-pull moisture handling. What that means in practice: sweat moves off your scalp instead of pooling there, and the fabric dries quickly once it does its job. The seamless construction also matters more than it sounds — there's nothing to rub against your forehead or create pressure points where a helmet pad sits over it.

Assos engineered this as an updated seamless summer cap with ultrabreathable UV protection to keep your head cool and dry , which addresses the other thing a summer cap quietly does: shielding your scalp from sun exposure through helmet vents on long days. If you ride with a shaved head or thin hair, this is the feature that actually moves the needle on a six-hour day in July.... Read More