Features:【Printing Instructions】Full-Width Product, Single-Sided Printing【Material Description】Polyester (Polyester Fiber)【Product Performance】It Is Made Of High-Density Full Polyester Fine Bead Polyester Fabric, Which Is Light And Strong. The Black Polyester Cloth Fixed On The Back Is Resistant To Dirt And Also Has A Fashionable Sense Of Contrasting Colors. The Woven Drawstring Is Durable And Not Easy To Fall Off. Drawstring Design: It Is Very Convenient To Open And Close, You Can Take The Internal Items Well, You Don'T Need To Worry About Losing Items, It Is Very Convenient, You Can Also Adjust The Length Of The Shoulder Strap By Yourself, Just Tie A Knot Under The Rope, This Style The Biggest Feature Is That It Is Durable And Lightweight. It Is Compact And Does Not Occupy Space When Folded. It Is Convenient And Practical To Travel And Carry. It Can Also Print An Exclusive Logo Design On Group Activities. It Is A Good Gift For Friends And Relatives.【Applicable Scene】Can Be A Fitness Backpack Or School Bag; Very Suitable For Sports, Fitness, Yoga, Travel, Etc.; Lightweight And Portable, Can Be Folded At Any Time Without Taking Up Space.【Accessory Structure】One Main Pocket【Washing Instructions】It Can Be Hand Washed Or Machine Washed.Instructions For Use Drawstring Design, Just Pull The Two Ends Of The Rope To Open, And Tighten The Two Ends Of The Rope To Tighten The Pocket.Special Instructions Due To Different Measurement Methods, The Error Of This Size Data Is Within 1-3cm, Which Is A Normal Phenomenon.