I fell off the left side of the bike, hitting my knee first and then sliding on the seat of my pants at around 35 mph. The jacket and backpack I was wearing got a little scuffed, but the pants took most of the impact. At the seat of the pants, the 600-Denier fabric blew open, both at a seam and smack-dab on the reinforced section of the right side. The asphalt made it through to my jeans, but no damage was visible. The fabric on the knee also split open but revealed only the armor, which held up admirably.