If you usually carry a lot of stuff with you on the trails, then you probably already own an oversized backpack. Fortunately, you won’t have to put up with it any longer if you decide to give this high-end pack from Y-3 a chance, as this particular product was designed to fit as close to your body as possible in order to make sure that its contents wont bounce around while you’re moving.
This can go a long way towards ensuring your comfort on a long day, and since the backpack is also compatible with hydration systems, water is one less thing to worry about. Boasting a ClimaCool construction, this product won’t smother you on a warm day, and it won’t get your belongings wet on a rainy day either because it is completely waterproofed. Moreover, its reflective elements ensure that you’re always visible to motorists, which can be a true life-saver.
Source Sporting goods