Black Diamond Notion Pants Climbing trousers (XL, black) - Go casual with the Notion Pants from Black Diamond. These cool climbing trousers are just as comfortable as they are stylish. Thanks to the soft material and loose fit, you can rock these trousers whilst bouldering or when relaxing with friends around the campfire. For mobility and heel hooks, the Notion Pants from Black Diamond are made of a blend of organic cotton mixed with elastane. The knees have been reinforced so that the trousers can withstand constant contact with sharp granite rock and rugged sandstone. Of course, the Notion Pants from Black Diamond have several large pockets for energy bars and other small items.