GRUV-X Port Authority® City Backpack Laptop Sleeve (14.75”x18.75”- fits most 15” Laptops) Metronome/Drum Key Pouches Made from 600D Ploy-Canvas, 360D Poly Twisted Twill Canvas Large compartment / Organization pockets. / Side Sports bottle mesh Luggage trolley pass-through on the back with Metal Zipper Pulls Dimensions. 18.75” x 11.25” x. 4.75” (1,002. Cubic. Inches)