In response to the needs of the majority of fans, Silca launched a larger BOA locking tail bag Mattone Grande, with a capacity of 71 cm, which doubles the storage space compared to the previous generation.
While the old Mattone tail bag could only hold about one spare tire, a set of portable tools, a set of tire sticks and CO2 cylinders, the new Mattone Grande tail bag could hold double the amount, and the 29" x 2.5" mountain inner tube was no exception. There are also separate positions where you can store change.
The bag features a waterproof YKK zipper with a BOA tightening system. It costs about $55.
Edit: HCY
Image: Silca