Top-tube bag Covering the whole top tube, the Z Adventure T3 is an essential frame bag for all ultra cycling enthusiasts. The dimensions have been thought out to maximise the carrying volume and minimise the risk of touching the pannier with your knees while riding. This bikepacking bag is universal and can be mounted on a road, gravel or mountain bike. One removable internal compartment allows an optimal storage. The Z Adventure T3 has a welded TPU-coated polyester construction and is waterproof.