AcTopp Travel Hiking Laptop Backpack Tactical Bag Trekking Backpack for Traveling Outdoor Hiking Daypack for 17 inch Laptop Lockable with Combination Lock Black (40L) High Strenghth handle. High Quality Zipper Freely Adujstable buckle Comfortable carrying system Removable pouch,loaded mobile phones and other small items. Material: PEVA+E Color: Blue SIze:36*18*2cm/14.2*7.1*0.8 in The length of the tube: 1.15m/45.2 in The maximum length of straps: Chest straps: 22cm/8.7 in Waist straps: 63cm/24.8 in Package size: 46*30*5 cm Package weight: 560g Material: Nylon; Color: Yellow The temperature of the water:-20~50 Size:46*30*3cm/18.1*11.8*1.2in