✔️Bicycle backpack in a modern design, which can be attached to Brompton and Tyrell IVE bikes with the included aluminium frame ✔️Reflectors for more safety ✔️Waterproof according to IP44, splash-proof on all sides ✔️German fid-lock magnetic fasteners ✔️Large compartment for 17-inch laptops and other equipment The Thermaltake TT100 Backpack combines modern design, functionality and volume, which perfectly presents a new look of modern commuting and bicycle lifestyles. Its unique cut angle allows the bar to reduce the windward area on the bicycle and the 3M reflective printing on the surface of the bag improves night riding safety. The waterproof performance is up to IP44-level multi-directional splash resistance. The bag also features German Fid-Lock magnetic fasteners to ensure the bag fits securely against the body. What’s more, TT100’s laptop compartment holds up to a 17" laptop and meets all your daily use. The TT100 Backpack perfectly matches Brompton and Tyrell IVE model.