alloy zipper won't rusty within 3 years, and wont break within 5 years; One side for ipad storage with sticker fixed inside the camera bag; Inner bag paddings are made of 7-layer PE foam and PP board, well protect your camera from shocking, very durable; Shoulder belts and handle that connected with camera rusksack have taken bar-tack reinforcement technology which load-bearing up to 50kg( 110.2 lb). Best care for your cameras, lens, flashes, tripod and other accessories.