A casual winter hat yet functional, the See Sense beanie is a cosy knit cap with reflective fibers woven within the threads, which are 84% acrylic and 16% polyester; hence the See Sense beanie hat is made entirely of synthetic materials.
Most winter hat beanies tend to be made of synthetic fibers, although some beanies are also made with natural fibers (cotton or wool), which have the advantage of being more breathable than acrylic or polyester. 
The See Sense beanie hat comes as a "one size fits all" so, there is only one size and two colorways (black and navy) to choose from. The See Sense beanie hat can stretch out and, it has a foldable hem (cuff) designed to fit those with large (tall) head circumference.
The hem measures 7cm high and integrates a non-reflective embroidered logo of See Sense. The hem is easy to fold via the pre-shaped line marking and can be slid up or down to adjust head height or simply for styling if you want to wear it like a slouchy beanie. The reflective fibers terminate at the fold marking of the hem and work extremely well, lighting up the hat almost like a Christmas tree. When light is shone into the hat, the See Sense beanie hat will glow in the dark and in low light conditions, making the beanie hat useful for cyclists, joggers and runners.