These are snow pants. The size is US M. I purchased them from Phenix. I've only worn them for snowboarding for 4 days, but there are a few snag marks. (About 3 places, but I apologize if I missed any. I've also included them in the photos.) Other than that, they are in good condition. The seat area is fleece-lined, which keeps you warm and prevents snow from seeping through. They are from a ski wear brand, so I think you can wear them with confidence.