Ortlieb Commuter-Daypack Backpack Description: The Ortlieb Commuter-Daypack Backpack City provides ample storage space that will keep contents stored inside safe utilizing durable waterproof nylon, with additional organization features inside and thoughtful external features that make commuting by bike a well supported endeavor. Features: Weatherproof back pack with spacious interior and external bike-friendly features Constructed with PU-laminated nylon for durable, waterproof build Roll closure grants fast access to interior contents Exterior zip pocket furnishes storage for resilient items Interior contains removable organizer with padded sleeve for electronics Shoulder straps represent favorable ergonomics on or off the bike Foam pads located in back panel form ventilation channels that reduce moisture and heat Removable chest and waist straps allow total retention customization External accessory loop for items like rear lights or U-locks Specifications: Pack Type: Backpack Pack Capacity: 21L Mount: Straps Waterproof: Yes Material: Polyurethane-Coated Nylon Dimensions: 19.7 x 11.8 x 6.1" Color: Blue Weight: 750g