The Pulse (previously known as the Atom+) Trails are changeable. If you go on a long thru hike then your gear, clothing, food and water requirements will all change as the trail goes on. The Pulse is the answer – an ultralight pack that can adapt with you to meet the conditions. The lightweight carbon frame and removable hip belt offer just enough support to help you when things get heavy, but are still flexible and light enough for true ultralight adventures. Feel like you don’t need it? Take the frame out and leave it at home. Want to try hiking hipbelt-less? Take the hipbelt off and see how it feels Load capacity13.5kg / 30lbs Weight656g / 23.2 oz (medium torso, medium hipbelt) Height fully unrolled77.5cm / 30.5 Circumference at base79cm / 31" Circumference at top86cm / 34" Main body volume35L Side pockets volume2 x 2.5L