【Durable Material】High-quality Nylon Fabric outside, Anti-scratch, Waterproof, Fine stitching,sturdy and easy to use, safe and reliable material. Smooth SBS zippers for the little kids to open and close easily. Polyester inside, quality of a material soft, anti-wrinkle, easy to clean.Different parts with different material gives it the ability to be lightweight,comfortable and looking Cute.<br/> 【Large capacity】：11*6.5*16inch /28*16.5*40cm(W*D*H);Capacity:18Liters;weighs 1.1LB/0.5KG;Inner divider fits the 15.6inch loptap tablet, Adequate capacity for childrens daily and school supplies,Multi-pocket design gives your children a habit of categorizing .<br/> 【Spine Protection】Breathable air cushioned back Comfortable for the back.“S”shaped shoulder Stress relief design protects children's back. Adjustable chest strap stabilizes the load throughout the day's activities.night light reflective panel on the front and back to ensure children's safety. There are also personalized name card and extra pockets for storage.