Fit Perfectly: pack size of 16.5 x 8 x 6.0 inch with adjustable shoulder/ chest/waist straps, will fit chest size teenagers/kids with 27" up to adults (men and women) with 50". The chest and waist straps make sure the pack does not bounce when you move.

Lightweight & Splash Resistance & Durable: Upgraded lightweight and Splash Resistance nylon with 2 Liter balder (in total 1.1 lb) to reduce your load and protect your belongs stay dry in light rain, and its double built-in waist straps improve its wear and tear resistance to ensure the pack’s life last longer.

Replaceable 2L Bladder: Includes a 2 Liter/ 70z BPA free bladder which keeps you hydrated. Its air flow system also keeps the water fairly cool. Includes screw cap for a adding small ice cubes for cooker drink for one day hiking, cycling, running or riding.

Small Front Pocket: The pack designed for RACING especially with a SMALL FRONT PACKET, it can ONLY hold an iPhone 6S plus, a bunch of keys and one or one two granola bars