Interior dimensions are 7.75 x 3 x 3 Inches with insert or 7.75 x 3.75 x 3.75 Inches without insert Exterior dimensions are 8 x 4.25 x 4.25 Inches Criss Cross strap and Velcro attachment system Made with sturdy nylon Removable interior tubing Ape Case Zippered Adjustable/Attachable Large Lens Case is a unique twist on the standard lens case. The interior is nicely padded for protection of your lens but also has a snug second layer of padding around the interior sides (in the shape of a tube) that is removable providing the ability to change the interior size of your case. Depending upon the circumference of your lens, you can keep the "tube" in place or remove it for a thicker lens. There is a unique "criss-cross" strap and Velcro attachment system on the back of the case that gives you the ability to attach the case to either a horizontal strap (like a belt) or a vertical strap (like on a backpack) up to 3-Inch wide. This adjustable/attachable case is made with sturdy nylon and features Ape Case's signature black on the outside yellow on the inside color scheme. The Hi-Vis Yellow interior makes seeing what is in your case a breeze. The zippered lid overlaps the side walls providing extra protection from the elements. The Large size is suitable for zooms such as 70-300.
I have a Canon EF 75-300mm f/4-5.6 III lens that I bought this case for that is 2.8" in diameter, but it does not fit well in this case. With the insert in, the fit is very tight inside the case and the lens is hard to remove from it, but with the insert removed the lens has a lot of wiggle room inside the case.That being said, the case is very well-designed and seems to be made really well, however, double check the dimensions of your lens because if it is around ..
Overall the case is well made to protect your lens. However as other reviews stated the padding was too thick to fit my 50-300mm Nikor lens.
I cut the padding in half and put the half wall of padding back in with velcro. It's now a perfect fit for the 50-300mm lens. 60 seconds of modifications later, it turned out to be exactly what I was looking for.