Our tripod bags have been redesigned to fit the latest Gitzo tripod models and more tripod and head combinations, and to improve comfort during carriage and handling. The new bags are made from rip-stop fabric, which is both softer to the touch and resistant against tearing and abrasion.GC3101 has a cylindrical form and is ideal for Series 2 and 3 Mountaineer tripods, Leveling Tripods, and Explorer tripods, and most combinations with standard photo heads. The shoulder strap is detachable. Specification External Hhead Ddiameter: 14.5 cm External length(L): 73.0 cm Internal base diameter: 14.0 cm Internal head diameter: 14.0 cm Internal main compartment length(L): 72.0 cm