the High-density Drawstring Backpack Rucksack is Constructed From Durable 420d Polyester Material, Combining Lightweight & Sturdiness. Featuring a High-visibility Reflective Strip, This Backpack Rucksack is an Ideal Choice for Activities Like Bicycle Rides, Sports, Fitness, or Any Situation Where Safety is a Concern. with a Variety of Colors Available, You Can Customize It with Your Logo, Making It Suitable for Sports, School, Work, Travel, & More. the Drawstring Closure Adds Convenience to Access Your Belongings, Making It a Versatile & Practical Choice for Various Purposes.