Suitable for summer. The weight of the bag surprised me, it is a little hard for Kipling, probably comes from the 2 wearing styles and the stowage of the belt.
Me personally bothered that the cover does not completely go over the zipper and so water may penetrate easily and the bag with the Velcro fastener is not waterproof. It is precisely when wearing einenb backpack on your back, this is when a short shower but already properly wet.