Thule's Versant 60 L Men's Backpack is a perfectly sized pack for 3 5 day adventures. It comes loaded with features like a customizable hipbelt, unique, interchangeable, easy access pockets, and a lid that converts into a sling. Its many features make this versatile collection appealing to a wide variety of trekkers. With an adjustable torso and hipbelts that can be customized for a perfect fit, you can't go wrong. There are also 3 different liter sizes 50, 60, 70 in the Versant men's series, so there should be one for any adventure you're planning.