Water-resistant and compact, the Mattone Seat Pack is one bike bag that has an innovative and functional design we're loving for long rides and short commutes. It's the ideal size for carrying a spare tube, C02, a multi-tool, and any other necessities. An accessible zipper allows riders to get into the bag while on the bike so we can carry on pedaling. The Mattone Seat Pack attaches to the seat's rails with a BOA closure system that allows precise adjustability.