. The Strobe Stuff Flash Bag (Black) from Think Tank is a padded belt pouch that is targeted to hold your Nikon SB-900 Canon 580EX II or similar sized flash. It can also accommodate a variety of accessories ranging from an external battery pack in the front pocket to spare batteries or gels held in their own clear pocket. A cable pass-through allows your flash to be attached to its battery without keeping the pouch open. The nylon pouch is accessed by strong YKK zippers and comes with a rain cover for the outdoor shooter. The pouch makes good use of Think Tank's Rotate or Lock technology that permits you to arrange the pouch on your optional Think Tank Belt so that it doesn't get in the way when you shoot. That means whether you're standing kneeling or prone you can easily shift the pouch so that it's either out of the way or hands ready for accessing equipment. Backed by its lifetime warranty against manufacturer's defects the Strobe Stuff is just the accessory you need when shooting weddings press and sports events or outdoor fill flash. Accommodates one pro-sized flash with (most) diffuser(s) attached. Specially designed front pocket with cable pass-through will hold external battery pack attached to strobe. Also has 4 slots for gels and/or extra batteries Front pocket holds an external battery with pass-through port for power cable. Clear pockets for gels or extra batteries Every modular component can be locked on a belt to keep bag in place on any of Think Tank's camera belts Smooth back finish on each modular component Rotate or lock components on the belt Attaches to any optional Think Tank Photo belt or belt pack Abrasion-resistant YKK RC Fuse zippers Removable seam-sealed rain cover included Mid-weight padding to protect your gear Top grab handle Attachment loops for the optional Keep-It-Up Shoulder Strap Compatibility Nikon SB-900 Canon 580EXII or similar DSLR flash with attached diffuser Attached external battery pack Gels and extra batteries Carry-On Form Factor FAA and airline carry-on specifications are subject to change without notice please check with your airline before designating this case as a carry-on item. Most airlines require carry-on items to have an external linear measurement that is equal to or less than 45.0' (114.3 cm). The external dimensions of this case add up to 17.9' (45.5 cm).