From the manufacturer

The ultimate ventilated headwear for mountain runners tackling steep, technical ascents in the heat. Comfortable and packable, it can be easily stowed in your running vest and thrown on to shield your eyes when the sun’s beating down. Built with a highly breathable fabric and close-fitting elasticated headband, it allows maximum airflow as intensity peaks.

Features

• Made with a breathable, Matrix™ single weave stretch fabric, perfect for moving at pace.
• Easy to stash in your running vest with a soft peak and packable design.
• The wide headband is built with side and back elastication for optimal fit and comfort.
• Features a discrete reflective logo.

Specifications

• Weight: 42g
• Main Fabric: Matrix™ single weave stretch nylon (130gsm)with fluorocarbon-free DWR