Max I have the Tommy and Lefebvre duffel bag. Separate compartments on each end for the boots. Main compartment is huge. Overall the bag is about 36"x18"x18" approx from memory. If you arent set on the backpack idea this is a great bag. Held all my gear for ECES plus hiking boots, two extra sets of bindings, pats kit etc. I picked up a second bag for the family. Fits 3 pairs of boots and 3 helmets with plenty of space to spare. Can't find it online but can send a pic of you would like.