Occasionsleisure sports practise outdoor indoor genderunisex activitysecurity survial emergency traveling riding cyclingbike leisure sports climbing fishing school hunting camping hiking typeshoulder bag cycling backpack sling messenger bag camera bag laptop pack hiking backpacking pack capacity l20l capacity range l10 20 material600d ripstop functionbreathable phoneiphone multifunctional laptop packs skidproof moistureproof wearable dust proof quick dry compatible cell