The Jääkäri M is a sturdy backpack that maintains a rigid shape on account of the inner support frame. The compression straps allow the backpack to be tightened so that it always sits snugly, even if it is not fully packed. The backpack is MOLLE compatible, which makes it easy to expand its capacity. The back has been reinforced with a highly durable plate made of ethylene plastic. The contents of the backpack can be quickly accessed from the right side through a vertical zipper that runs along the entire backpack.