Thule Shield 2 Pannier 13LBike bags that bring your gear with ease The Thule Shield pannier 13L mounts easily to your 8 16mm bike rack and once installation is complete, they can be attached and detached in mere seconds. The reflective elements and bike light attachment loops provide visibility in the dark to keep you safe while the three interior pockets keep small items organized. These panniers have a certified rating of IPX4 on the internationally recognized IP waterproof