The hazelnut is the hard-shelled fruit of the hazelnut tree. Hazelnuts, also known as filberts from European folklore, are believed to have originated over 5000 years ago in prehistoric China. Currently, the world's top three producers of hazelnuts are Turkey, Italy, and the United States.
Summer/Hot Weather Riding: Articles: Compared: 10 Mesh Motorcycle Jackets. Compared: 14 Warm-Weather Motorcycle Gloves. Compared: Hot Weather Gear. Cooling Down In Very Hot Weather.
With that said, if you choose to wear them in the summer, that's still just fine because the boot by design is lighter than most. I recommend wearing a nice pair of thin but durable socks to help keep your feet protected but cool.