Sportube Series 2 Case: Hello I am Paul from Sportube. This model is our series 2 model also known as the Double case. It is designed and developed for two pairs of skis with bindings and poles, very simply like the series 1, the case features wheels. Once again making it very easy to maneuver around the airport or through the parking lot. The case is adjustable all the way up to 2 or 7 so it takes long across country skis and once again for shorter carving skis that we have today. As you make the case smaller, the case actually gets stronger because we are doubling up on the plastic material around the sides. The case is lockable at the same place as the pin will normally go that adjusts the length of the tube and it features a shoulder strap that is removable. Also features the easy pull attachment point on here to make the case more ergonomic when you are pulling through the airport. Thank you I am Paul from Sportube.