Deuter Triangle Bike Bag 1.7 The Deuter Triangle Bike Bag 1.7 is a durable and convenient bag with optimal storage space for your journey essentials. Constructed using durable, ripstop polyamide, the fabric of the Deuter Triangle Bike Bag minimises abrasion and has a PU coating which ensures it is water repellent to keep any water out. The zippered frame allows you to safely store tools and a first aid kit within reach should you need them while the three Velcro straps allow you to attach the bag to the rear frame of your bike. Lastly, reflective details increase your visibility in low light conditions.