Product size: L32cm H46cm W19cm Young people should dare to be different, just like I AM's design persistence, innovation, and seek common ground. Add color through the use of sexy, Doudou bag attaches importance to comfort, I AM creates a new generation of backpacks, two focus. I AM exclusively develops a beanie strap. The silicone beanie on the strap tightly combines the backpack and the shoulder of the human body. It has anti-slip function, disperses the weight of the shoulder, has a decompression massage effect, and is ergonomic. Use three-color mix and match, two-color large block, for messengers who clearly like the avant-garde contrast performance, strongly recommend the red, blue and black contrast backpack. The low-key, literary temperament is suitable for you to have a calm and similar color, a large piece of cloth with two-color stitching, showing a brazen and changing back backpack atmosphere. . Unique design, Peas strap . Water-repellent surface treatment . 3M reflective strip . Detachable safety whistle chest buckle . Strap intimate storage . 15 inch laptop bag ‧ Main material: 320D * 500D can be pulled up (nylon cloth) PU back adhesive coating, strengthen the yarn fixing treatment, and prevent water repellent treatment on the surface. Cantilever is a high-strength nylon fabric, which has good abrasion resistance, tear resistance, stable color, and it is not easy to change color after long-term use ‧ Zipper: Nylon Zipper + Metal Zipper ‧ Inside: 100% Tetoron without printing ‧ Hardware: Low-nickel anti-rust plating without heavy metals ‧ Webbing: acrylic webbing ‧ made in China ‧ Cleaning and maintenance: Wipe dry immediately when exposed to moisture, and air dry in a ventilated place. If it is dirty, wipe it gently with a white, clean, semi-wet cotton cloth or a clean, soft-bristled brush. Avoid wiping with volatile materials. Do not wash it to avoid discoloration of the main materials, deformation of the bag-shaped lining or rusting of accessories. " Function Description" Front piece: Smart phone & pen insert function bag x2, key ring x1 Main bag: open pocket x1, zipper pocket x1, 15-inch laptop protection bag x1 On: Zip Hanging Bag x1 Side piece: Side pocket beam opening x2 ■ Remarks: 1. The product size may be slightly different due to the measurement method. The marked size is for reference only. Please use the physical size as the main. 2. The color of the product image file varies slightly depending on the computer screen brand and settings. Please refer to the actual product color.