U-TIMES Unisex 3 Way Multipurpose Canvas Chest Pack Double Shoulder Bags Unbalance Backpacks External dimensions: 19cm x 8cm x 29cm / 7.48" x 3.15" x 11.42" ( L x W x H ) Note:manual measurement with 1-2 cm error. The bag consists of one main zipper compartment,one front zipper pocket,one front flap snapper pocket + one back zipper pocket. Made of high density canvas fabric.The length of the shoulder straps are adjustable,and the bottom end of the straps are fixed with metal hook which can be easily removed.The unique factor is the top part of the strap can be divided into two parts with the zipper.So you can use it as cross body shoulder bag or single shoulder bag when the strap zipper is "off",you can also use it as a backpack when the strap zipper is "on". Ideal option for outdoor sports (hiking,camping,climbing,cycling etc) and travel and daily life use as well.Simple,practical and multi-function design and comfortable to wear. Five colors:Black,Grey,Army Green,Coffee,Khaki,Blue for your options.