Drawstring Design - This Backpack Is So Easy To Close And Open Due To The Drawstring Design, Great Alternative To Regular School Backpacks For Many Schoolswith Narrow Hallways Don'T Allow Large Backpacks, Also A Great Gift For Your Friends And Family.Machine Washable - Being Washable Is A Must For Any Drawstring Bag.Are Machine Washable, Recommend Mild Detergent And Hang To Dry!Size - Measures Approx. 42cm*36 Cm/16in*14in, Suitable For Most Adults. Lightweight And Easy To Carry, Large Backpack Can Be Folded Into A Small Size.The Black Polyester Fabric Fixed On The Back Is Dirt-Resistant And Also Plays A Fashion Sense Brought By The Contrast.You Can Adjust The Length Of The Shoulder Strap By Yourself, Just Tie A Knot Under The Rope. The Biggest Feature Of This Section Is That It Is Durable And Lightweight, It Is Compact And Does Not Occupy Position, It Is Convenient And Practical To Carry Around.If You Have Any Questions About Our Products, Please Contact Us First. We Will Try Our Best To Help You Within 24 Hours.