These crates are ideal for dogs up to medium size such as Spitz, Sheltie or Border Collie. Thanks to its narrow width of 21.45 inch, it fits easily into your car’s trunk. Available in three depths. The ProLine dog-box is the world's safest, most rugged dog transportation system, setting a new standard in design, engineering and workmanship. Outstanding results in independent crash and safety tests by TÜV-SÜD, the world leading technical service organization. Created by Swiss engineers in consultation with professional dog trainers and other experts; manufactured in Switzerland.