The more equipment you can carry the more you can do at the set! This Manfrotto Bumblebee bag allows you to carry up to 2 DSLRs, as well as 8 lenses up to 500mm. We use this bag to carry both of our DSLRs safely to any location. It's water repellent body and removable rain cover helps protect our gear while traveling in the bad weather. The durable and comfortable straps are certainly a must need for any camera back pack, which is exactly what you get with this bag!  

B&H Link: http://www.bhphotovideo.com/c/product/1049375-REG/manfrotto_mb_pl_b_220_bumblebee_220_pro_light_backpack.html