Lone Peak Shorty Bicycle Rear Rack Pack Made in the USA since 1979, Lone Peak uses super-durable, water resistant 1000 D Textured Nylon Premium hi-density foam in sides and bottom of bag for sag free stability and performance 1 main large compartment, 1 zippered lid compartment, rear light attachment and 3M reflective trim Universal fit and shorter in size for bikes that have tight clearance between seat and rear rack Dimensions: 12" L x 6.5" W x 6" H (unfilled top zippered pocket Height is only 4"); Volume 185 cu in / 3 liters; Weight 11 oz.