The Protactic LCS III 11x18 is designed for the working photographer shooting events and other jobs all day, largely outdoors. This lens case is sized with an internal diameter of 11cm and an internal height of 18cm, perfect for larger lenses. The dual-density foam provides a snug fit with a harder exterior for bumps and a softer interior for a secure hold. The compression strap allows for a customized fit, ensuring your lens stays in place.