Meet your new go-to sun hat for every adventure. The Outdoor Research Helios Sun Hat is built for hikers, dog walkers, anglers, amblers, and anyone who spends long days under an open sky — keeping your head, face, and neck shielded from the sun without weighing you down.
Crafted from a double-weave ripstop shell (89% nylon, 11% polyester) with a 100% Supplex® nylon under brim, this hat is as tough as it is comfortable. The UPF 50+ rating blocks harmful UVA and UVB rays, while the water-resistant, quick-drying fabric keeps you cool and dry whether you're on the trail, the water, or the beach.
The floating foam-stiffened brim (2.75") provides reliable structure, and the dark under-brim fabric cuts glare so you can actually see where you're going. A one-handed drawcord lets you dial in the fit on the move, and the removable chin cord keeps things secure when the wind picks up. When the day's done, it packs flat — no fuss.
This chart is based on head circumference measurements in centimetres. Please use a tape measure to find your closest fit.
Size chart: Outdoor Research Hats
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