For our ultra-distance training runs and semi-supported alpine races, the Black Diamond Distance 8L Backpack helps us stay prepared for changing conditions and far-flung aid stations. The multiple pockets organize our layers, fuel, creams, and poles, while the dual side compression straps pull it all in close. We enjoy a comfortable, low-bounce carry thanks to the stretchy side wings delivering a body-hugging fit that still lets our lungs expand on climbs and through the final kick.