REI Lila Hat
Here's what other sites are saying:
The REI Lila hat offers stretchy, quick-drying warmth for running, playing and walking the dog when the temperature dips. Polyester/spandex fabric blend provides 4-way stretch and dries fast, making it ideal for active sports. Short bill helps shield eyes from the sun and rain. Ponytail opening at the back; reflective trim increases your visibility in low light.