This is the hat for cool coverage during hot summer runs. The Brooks Propel Mesh Hat is so lightweight and breathable you’ll forget you’re wearing it. The internal headband is comfortable enough to wear all day and the moisture-wicking materials keep the sweat off your brow. Plus, it packs down for easy storage on the move. Features: Packable: This running hat has a flexible brim and packs down for easy storage. Breathable & Quick-drying: Mesh DriLayer® fabric breathes well and dries quickly, while an internal sweat-wicking headband helps manage moisture. Personalized Fit: An adjustable back closure lets you fine-tune your fit on the fly.