Lowepro Lens Case 11 x 11 cm (Black) Fits wide-angle zoom lenses, similar to 17-35mm f/2.8 Purpose-built, one-piece foam padding construction protects a specific lens size and shape from top to bottom and side to side; sturdy, yet lightweight Built-in SlipLock attachment tab secures the Lens Case to a Lowepro SlipLock compatible bag or pack Removable, adjustable shoulder strap provides an extra carrying option and allows for a custom fit when worn over shoulder or across body Compression strap secures case to a backpack or shoulder bag with daisy chains or loops