Here's what other sites are saying:
The Mountain Hardwear Chiller Ball Cap is the go-to lightweight headgear for any aerobic activity. It gives you immediate and ongoing cooling with Cool.Q(TM) ZERO technology.
- REI refers to the men's version
The go-to lightweight headgear for any activity, providing immediate and ongoing cooling with Cool.QTM ZERO technology lining the forehead. The Chiller Ball Cap offers UPF 25 sun protection and fits comfortably under a helmet with stretch-fit elastic.
- Mountain Hardwear refers to the men's version
Mountain Hardwear Chiller Ball Cap FEATURES of the Mountain Hardwear Chiller Ball Cap Cool Q Zero provides an immediate and ongoing cooling sensation Wrinkle-resistant, quick-drying fabric is lightweight, breathable, and durable Mesh sides for ventilation Closed cell foam brim allows hat to float SPECIFICATIONS of the Mountain Hardwear Chiller Ball Cap Average Weight: 2 oz / 51 g Body: Summit Stretch plainweave (93% nylon, 7% elastane) Panel: Cool .Q Zero Stretch Softie Jersey (92% polyester, 8% elastane)
- Moosejaw refers to the men's version
Keep your nogin cool with the Chiller Ball Cap from Mountain Hardwear. With UPF 50 sun protection, mesh sides, and Cool.Q ZERO fabric, this is the perfect hat for warm weather adventures. A closed cell foam brim keeps your hat afloat when you unexpectedly lose it the lake or river.
- Mountain Gear refers to the men's version