Fits telephoto lenses similar to 300mm f28 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