This is the perfect choice for the summer months when you need an extra layer in the evenings/mornings/cooler days, but a standard hoodie is far too warm to be comfortable.
The hoodie is made from a mixture of cotton/polyester/spandex which allows it to be fairly snug fitting and tailored to the shape of a typical upper body, whilst at the same time allowing complete freedom of movement, which is essential when casting, etc.
The cuffs and neck are loose-fitting, to allow plenty of air flow, and the hood can be adjusted via a drawcord.