These are Mammut's Castor Pants, softshell pants for mountaineering. The size is M Short, which is not available in Japan (M waist with S length). I bought them a few years ago and never used them. Made with high-quality Schoeller material. - Water-resistant outer material - ColdBlackTM reflects up to 80% of sunlight, allowing dark colors to function like lighter colors. - Two side pockets, one hip pocket - Side ventilation with mesh inserts - Pre-shaped knees - Crampon protection with durable reinforcement - Integrated gaiters - Regular fit