Ape Case Zippered Adjustable/Attachable Medium 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 Medium size is suitable for most intermediate zooms such as 55-200 or 70-300 mm.