Ahrex Knit Beanie Khaki
This is the most comfortable beanie I have ever worn. The type of stitch used allows the beanie to stretch over the biggest heads without the feeling of being squeezed.
It can also be worn over your cap as it has a lot of stretch.
The colour is perfect for staying less visible to fish.
Beanies are perfect for colder conditions, and the perfect type headwear for fishing or just being outside in windy and cold circumstances.
For more headwear options, have a look at the ahrex cap.