Chrome's Welded Rucksack uses the same technology as Coast Guard boats, giving you a lightweight, waterproof, and durable way to commute with your gear. Its 600 denier TPU coated outer shell is held together by waterproof seams so you'll never worry when the rain clouds appear. Easily stow what you need for the day thanks to the removable 15-inch laptop sleeve and quick access exterior pockets for your U-lock, wallet or other personal items. Different days call for different loads which is why Chrome added shark tooth closures that allow you to adjust the bag's size to fit your needs. Ergonomic shoulder straps make it comfortable to wear as a pack, and on top of that, this tough rucksack can also be carried by hand or strapped to a bike rack.