Think Tank Essentials Convertible Rolling Backpack - The Essentials Convertible rolling backpack goes where other rollers cant. Roll smoothly through the airport then deploy the backpack straps to carry over rough terrain. Sized to meet most airline carry-on requirements*, the Essentials fits two DSLR or Mirrorless bodies, a mounted 70200mm, multiple lenses, and a 16-inch laptop. And because its from Think Tank, the bag will roll long into the future. Key Features: Deployable backpack straps allow you to carry the roller on your back when the terrain gets rough Specially designed interior to maximize camera gear for carry-on, meeting most U.S. and International airline carry-on requirements* Dedicated laptop compartment fits up to a 16-inch laptop Holds two standard-size DSLR bodies and 46 pro lenses Mirrorless System 16laptop 70200mm f/2.8 attached 2470mm f/2.8 100mm or 105mm f/2.8 macro 50mm f/1.4 Flash Example: Sony A7rIII with 70200mm f/2.8 attached