Thule Allax Dog Crate - The Thule Allax dog crate is the perfect choice for safe and comfortable car rides with your four-legged friend. It is thoroughly crash tested in our own Thule Test Center, as well as certified by TÜV SÜD. The innovative crumple zone provides superior protection for both passengers and your dog. The gas dampened door opens and closes softly, and the crate has a built-in lock for added security. Thule Allax dog crate is crash tested from the front and the rear, as well as a simulated roll-over scenario The innovative crumple zone adds an 10-13cm gap, even when the crate is in its most shallow position. It compresses during a rear collision, absorbing impact and protecting your dog The door's gas damping mechanism ensures a gentle open and close, enhancing your everyday interactions The crate has a built-in lock for added security The window and the openings in the crate make it easy for you to check on your dog at any time S: For dogs with wither heights up to 17.7 inches M: For dogs with wither heights up to 20.1 inches L: For dogs with wither heights up to 21.7 inches