GIRO helmet, SEAM, size M. Size M: 55.5~59cm Used for 7 seasons. This multi-functional model has 10 vents that can be opened and closed by sliding the slits on the top of the head, and the size can be finely adjusted with the dial on the back of the head. The visor also has slits to release heat from the goggles, preventing them from fogging up. I think it can also be used for cycling if you remove the detachable ear covers. Please judge the condition from the photos. There is some aging deterioration, but I think it can still be used for a while. Please note that we do not accept returns or refunds after purchase, so please consider this item after fully understanding that it is a used item. Quoted from the GIRO website: The SEAM is the ultimate all-mountain helmet. Equipped with an improved Thermostat Vent System and Stack Vent System, it is feather-light, allows for internal temperature adjustment, and keeps goggles clear, enhancing rider comfort. It is equipped with the best fit system ever developed for snow helmets, allowing you to use it comfortably all day long on the mountain.