Front & Top Load Adrenaline 6,500 Cu in Backpack By High Peak NEW FEATURE - FRONT LOADING - UNZIP THE BIG FRONT PANEL AND LOAD LIKE A SUIT CASE DETACHABLE FANNY PAK - RAIN FLY COVER INCLUDED VARIO HARNESS SYSTEM - TOP QUALITY MATERIALS - 330D DOUBLE RIP STOP NYLON PACK IS HYDRO COMPATIBLE WITH AN ADJUSTABLE CHEST STRAP FOR WOMEN SIZE: 5,500 CU IN AND THE TOP LID EXPANDS IT UP TO 6,5000 CU IN.