This tactical backpack by LINGYUN is made entirely out of polyester with polyester lining material. The bag consists of a large main compartments with a large capacity and several pockets in different sizes for all of your items. The bag is extremely spacious, made out of durable materials and completely waterproof. All of the straps on the backpack can be adjusted and there are a few connecting points for clasps as well. On the side of the backpack you will find two pockets which can be used for easy access to your essential items. On the front you will find a large pocket which can easily fit a tablet, and a smaller more secured keeping your essentials safe. The carrying straps are extremely comfortable due to the wideness and soft cushioning which divides pressure over your shoulders. TypeOutdoorMain materialPolyesterLining materialPolyesterPatternSolidStyleTacticalDimensions50 * 31 * 16 cmCapacity40 liters