The BackLight from Mindshift comes in three sizes 18L, 26L and 36L but we will be focusing on the 18L in this review as this is the one that we received. The 18L has a gear profile of two standard DSLR bodies with lenses attached and 1–3 standard zoom lenses or two Mirrorless bodies with lenses attached and 3–5 lenses as well as up to a 13” laptop and a 10” tablet and space for your personal gear in the 5L front compartments, it takes up to a maximum lens size of 300mm f/2.8 or 150–600mm f/5–6.3 attached to a body.