BioDomes Spiked Black-Red Shell Backpack Go to amazon.com Related posts Which is the best bowser bagpack? FeatureOfficially Licensed80% Polyester, 20% PUMeasurements: 19" X 15"Zipper Closure DescriptionDon't be boring!! Break out of the mold of boring backpacks. If you are looking for something to stand out, then this backpack is for you.