GLRSBUTY Small Lightweight Sling Bag/Nylon Single Shoulder Backpack Crossbody Chest Pack for Travel School Sport Gym/Women Men Ladies Boys Girls The mesh bottle pouch can hold a small size water bottle,It is 2.75x5.9 inch(DiaxH). There is a small pocket on the top of the strap,It works for cash,money and some small item,If you want to put a phone in it,It just can hold a iPhone4,It is 5.5x2.75 inches.And it is better to keep your phone in the outside pocket in the front of the bag(5.9x10.2 inches). The main pouch is 7x15.7 inches(WxH),It can hold your mini iPad,iPad Air,wallet,passport keys and some daily items. The bag can be worn on right shoulder with the bag on your front and on left shoulder with the bag on your back. This sling chest bag is water resistant,It can protect your items from small rain.But do not use it over 20 minutes on the rain.