The Sling Backpack is constructed of distressed buffalo leather. It is designed for left- or right- handed use, and in a slim shape for ease of movement. It includes the Standard Holster designed by Mernickle Holsters and tested with M&P 9mm extended mag, Heckler Koch VP9 full size, Sig Sauer P320 C, Glock 19 compact, Sig P365. The overall size of the bag is 12" Tall x 8" Wide x 2.5" Deep and the size of the gun compartment is 7 3/4" Wide x 10" Tall. Features a special padding to prevent gun imprinting.