zipper closure Size: 55 x 14cm. Adjustable belt lenght: 90-170cm ; Durable adjustable straps, quick-release ABS buckle, easy to use, easy to put it in you backpack, luggage bag or suitcase when you travel LARGE MAIN COMPARTMENT is big enough for carrying your ipad mini, cell phone, MP3, glasses, tactical flashlight, compass, kettle, cigarette, snacks, umbrella etc. The zippered BACK POCKET is hidden for extra protection about your passport, ID card, Credit card, wallet and essential stuffs. 3 Front pockets can be used to save your gadgets, small parts MOLLE external expansion system designed to be used in combination with other equipment, you can load pockets, water bottle bag, accessory kits and other Ideal for sports, running, walking, jogging, motorcycle, bike, riding, cycling, travel, outdoor, hiking, hunting, tactical, fishing, camping, all kinds of outdoor activities and daily use