Purchased in 2024, this helmet was taken into the mountains as insurance for a variety route climb, but it was never actually needed, so it's practically only been tried on. Since purchase, the helmet has not been subjected to any impacts. I believe this is a reasonably priced mountaineering helmet that is ultralight, features a calm Montbell design, and excellent breathability. I really liked the way the rear adjuster fit snugly to my head, but I often use an ultralight helmet I've been using for a while, so I'm selling this one in unused condition. The original instruction manual is also included. - Brand: mont-bell - Model Name: L.W. Alpine Helmet - Weight: 225g - Size: M/L (57-62cm) - Color: Gray - Features: Lightweight design - Ventilation: Multiple ventilation holes - Size adjustment function: Rear size adjustment dial Although it's almost new and unused, it has been stored in a closet for a while, so there may be some wrinkles or slight dust on the original box. Those seeking a condition as good as new should refrain from purchasing. However, it is offered at a low price, so it is highly recommended for those who are planning to challenge summer mountain climbing or Mount Fuji climbing this year, or for those who were just about to purchase a Montbell LW helmet. Quoted from the official website: ----- Product Information This is an ultralight helmet for mountaineering and climbing, weighing only 225g. It meets international safety standards, and the outer shell and inner shell are molded in-mold to achieve excellent lightness. It has a unique Asian fit design that fits the shape of Japanese heads, and is available in two sizes. In recent years, there has been an increase in accidents where people have been injured on the head due to falling rocks, falls, and slips while mountaineering. Wear a helmet to protect your head from these dangers. Specifications [Material] Outer shell: Polycarbonate Inner shell: Expanded polystyrene Inner pad: Polyester [Weight] 225g (S/M) [Size] Head circumference: M/L (57-62cm) [Features] Rear dial adjuster with 3-stage height adjustment, headlamp clip, washable inner pad