When you need lightweight, high performance for intense activities in cooler conditions the Tech Trainer Hybrid is an excellent choice.
Icebreaker says:
Designed for cold-weather running and training, the Tech Trainer Hybrid Beanie offers a combination of warmth, protection and breathability. The main fabric is a 260gm merino jersey for extra warmth, with a touch of spandex for enhanced fit. Plus a zoned overlay panel features ultralight, air-permeable Pertex® Quantum Air fabric with a DWR finish to repel light moisture and wind.
Icebreaker's Tech Trainer Hybrid Beanie uses a combination of merino wool and Pertex Quantum to create a zoned hat that excels in cooler conditions when worn for intense activities. The lightweight merino is ideal for delivering a surprising amount of warmth for how thin it feels and this is maintained even when wet. The Zoned Pertex around the outside does a good job of protecting your forehead and ears from the worst of the weather without reducing breathability.
This beanie is perfect for running, fast-packing and cycling in cooler conditions. It is easily stowed in a pocket and the low bulk design makes it highly versatile.