CRASH TESTED: Enhanced strength dog harness is crash tested for dogs up to 34kg; tested at a university testing facility following child car seat standards ADJUSTABLE & COMFORTABLE: Dog car harness features five adjustment points for customisable fit. Has a broad, padded chest plate for extra protection and comfort and includes a no-pull D-ring at the front INCLUDES SEAT BELT TETHER: Dog tether (seat belt loop with attached carabiner) is included with the harness and is compatible with any car seat belt system - can also be used as a lead for training SIZE & FIT: Medium fits dogs with neck 40.5 - 63.5cm and chest 45.5 - 71cm; Please refer to Kurgo size chart for information on how to properly measure your dog