6 Inch Grs RPET Roll-Top Backpack Rucksack 18L in Solid Black. Practical, Sturdy & Water-Repellent Roll-Top Backpack Rucksack Made of Grs Recycled Polyester Featuring a Large Inner Compartment with a 15.6” Laptop Compartment, a Zippered Front Pocket, & 2 Side Pockets. Padded Backing, Adjustable & Padded Shoulder Straps, Carrying Loop & Handy Roll-Top Hook & Loop Closure. the Perfect Bag for Everyday Use, with a Minimal Ecological Footprint. Minimum Quantities Apply.