Artinus Magnetic Cap features: 

• 3 layer material: extra membrane to protect inside of cap. Excellent water repellent and windproof capabilities especially due to the materials being resistant to external climate change. Releases internal moisture/sweat easily and forms a molecular shield around it 
• Magnet on left side of cap to place various accessories such as line cutter. 
• Strap so you don’t lose your hat in windy conditions
• 3 Sizes: M (56cm), L (58cm), 2L (60cm) 
• 3 colours: Black, White, Red