1200-denier Technolast water-resistant, UV-treated polyester construction Large main compartment and two smaller side pockets Unique anchor knot attachment system features anti-slip cam buckles Anti-scratch base Rain cover with pocket Installs over the passenger seat and part of the tail section; fits bikes with a tail section width of 10.2" or less Measures 15" L x 27" W (front; 20" rear) x 16" H (from top of bag to bottom of overlapped sides); 7" H from top of bag to seat in front (5" in rear). LUGGAGE TAIL BAG NAVIG