The POC Ultra Frame Bag 3L sits inside the main triangle and carries weight low, where it least affects handling. It suits bikepackers and long-distance riders who want the heavy items out of a backpack and onto the frame. The bag is made from fully waterproof TPU with welded seams and a waterproof zip, so contents stay dry in sustained rain rather than merely resisting a shower. The side opens wide enough to reach in while riding, and an extra layer at the zip stops the pouch flopping fully open. Internal mesh pockets keep small items organised, the translucent material lets you see what is inside, and multiple hypalon straps hold it tight against the frame. There is a cable port for a battery or dynamo. Key features 3L capacity, fully waterproof TPU with welded seams Waterproof zip and wide side opening for on-bike access Internal mesh organisation pockets Translucent material so you can see the contents Multiple hypalon straps for a stable fit Integrated cable port, reflective side details, around 220g Check your frame's triangle dimensions before ordering.