Feature:Geometric 1. Fashionable color-changing laser: This year's popular appearance and temperament, daylight and luminous are constantly changing brilliant colors2. Three internal pockets: mobile phone pocket, main pocket, zipper pocket to meet your daily needs3. Double protection: The anti-theft design of the plastic buckle and the opening design of the shrinkable bag make it easy to pick and place items4. Reinforced and solid shoulder strap: the back of the bag is reinforced to prevent rapid deformation and wear5. Freely adjustable shoulder strap: super long shoulder strap, which can be loosened and tightened according to your wishes6. High-quality materials and workmanship: high-quality webbing, high-density stitchingLarge backpack size: 32.5cm*35cm*14cmMiddle package: 18*28cmSmall bag: 13*24cmPacking list: 1pcs* bag