This Sports Backpack is lightweight yet sturdy. It is water resistant and very useful for outdoor activities. It is made of nylon on the outside and is lined with polyester. The shoulder pads have sponge padding so your shoulders won't hurt from carrying the backpack. There are 2 larger pockets and 2 small pockets. The backpack is 11.81" & 8.66" & 20.47". It can be used for hiking, camping, travel, climbing, etc. #RankBoosterReview ii, Sponsored iii, Sports Backpack, https://www.amazon.com/gp/product/B074MQ3V1L/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1