The Fastpack 15 is a remarkable backpack that truly 'under - promises and over - delivers'. It can actually hold more than 20 litres. Key features include a unique zip - down main compartment, allowing you full access to your gear. There are quick - draw compartments at the front for water, your phone, keys, and a bit of food. The MonoRip mesh is both extremely strong and fully breathable. There's also a dedicated no - bounce laptop pocket with cord storage inside for secure keeping. Specifications: Secured volume is 15L, unsecured volume is 6L, and the total volume reaches 21L. It weighs only 500g and has dimensions of 47 cm x 26 cm x 19 cm. Sizing (Unisex): S/M fits 64 cm - 102 cm, M/L fits 76 cm - 122 cm. Measure while wearing the clothes you plan to wear. A fully - loaded pack will fit a bit smaller. Measure at the bottom of your ribs.

Using the Fastpack 15 is easy. First, use the quick - draw compartments at the front for items you need to access quickly, like your phone, keys, and a small snack. The unique zip - down main compartment is great for larger items. For your laptop, place it in the dedicated no - bounce pocket and secure the cords in the storage area. When measuring for the right size, make sure to wear the clothes you'll typically have on when using the pack. Remember, a fully - loaded pack will fit smaller. As for maintenance, since the MonoRip mesh is breathable, it's best to let the pack air dry if it gets wet. Avoid using harsh chemicals on it to keep the mesh in good condition. Also, try not to over - stuff the pack beyond its capacity to maintain its shape and functionality.