thought I'd try this K&F camera backpack since we travel a lot, and I'm always looking for options that allow me to carry my basic kit for photography, droning, and filming video . I've had good experience with K&F's filters and other accessories, and it's interesting to see that they're branching out into making camera backpacks. I think they did their homework. At 25 liters, it's what I would call a mid-sized unit. The cover is made from good quality gray nylon, which provides a certain degree of water resistance on its own. It also comes with a waterproof cover that can cover the entire backpack to make it completely waterproof. What sets this backpack apart from some of its competitors. On the one hand, the back of the backpack has a hard shell integrated into the lining, so that if you lean against a rock wall, the contents are better protected than in some camera backpacks. In my experience, this is a real concern, because when I'm hiking to a destination, I stop to rest and lean back against a brick or stone wall. Likewise, it is not uncommon to temporarily put your backpack on the ground and let it fall on your back. The interior of the backpack contains the usual dividers that allow you to organize and protect your gear. Pretty much a full-sized DSLR or mirrorless camera with up to three lenses, or maybe a drone in place of a lens. It also includes a protected sleeve that holds my 16-inch MacBook Pro. There are straps at the bottom of the backpack to hold a small tripod. For me, 25L is a good size compromise for a bag I would take into the field rather than a bag I would use to carry all my gear on a long trip. Recommended.