Nylon Imported 💎【Large Capacity&Lightweight】Size: 7 x 3.5 x 15 inches /18 x 9 x 38 cm. The main compartment of the sling backpack can fit tablet or Ipad up to 12”. Bottle holder can fit the Diameter of water bottle up to 8.5cm(3 3/8 inches). The back Anti-theft Pocket can protect your valuables safe. The dimension of the cell phone strap pocket is L×W×H＝18cm×8.5cm×2.2cm, which can fit most plus smart phone.