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Wear a chill pill.
Instead of getting a hat and hoping you stay cool, grab the Mountain Hardwear Chiller II Ball Cap, which is designed to actually make you cooler. It uses a Cool.Q lining and side panels to wick moisture away from your head and provide an immediate cooling sensation, has a foam brim to ensure that it stays afloat, and UPF 25 sun protection to protect your noggin from sun damage.
- Summit stretch fabric
- Cool.Q Zero stretch lining and panels
- Wrinkle resistant, quick drying, and breathable
- Closed-cell foam brim with dark underside
- UPF-25 sun protection
- Item #MHW003K
- Q & A
Snug running hat
- Familiarity: I returned this product before using it
Ended up returning this because it was a bit snug and didn't adjust, but for a running hat you would probably want it snug. Just ended up looking a bit goofy on but my husband has a big head.