We make our back-flags seamless with the Black Diamond Notion SP Pant-an organic cotton pant with just enough stretch for bouldering and sport climbing. On more technical climbs, the elastic cuffs keep pant legs secure around the ankle to hone in on knobby granite footholds and reinforced knees protect your skin from cheese-grater rock on less-than-graceful sequences. Once you've reached the chains and lowered, the comfort on the wall is matched on the ground—the Notion SP will make you feel like you're lounging in sweatpants between burns.