Converse Backpack Book Bag Material:100%Polyester. Dimension:(W) Top 9.8", Bottom 13.4" X (H) 18.9" X (D) 6.2" = (W) Top 25 cm, Bottom 34 cm X (H) 48 cm X (D) 16 cm Strap length:approx 93 cm Outside pocket:4, Inside pocket:3