Man business pack, inner large capacity, multilayer design, make the things in order. High density oxford cloth material, waterproof, anti-fading. It is durable,wear-resistant, practical and delicate, meet daily travel needs. Features: Large capacity, inner multilayer space design. Durable zippe, smooth to open and close, durable and wear-resistant. Superior oxford cloth material, high density waterproof. External charge position, two-way charge interface, practical and delicate. Back breathable fabric, honeycomb type, included back anti-theft pocket. Adjustable shoulder strap, relieve pressure of shoulder. Specifications: Brand: Mark Ryden Model: MR7510 Color: Black, Gray (optional) Material: Oxford Cloth Open Way: Zipper Hardness: Hard Moderate Shoulder Strap: Single Package Weight: 490g / 17.28ounces Package Size: 320 * 180 * 120mm / 12.60 * 7.09 * 4.72in Packing List: 1 * Chest Pack