Animals Matter Car Seat Attachment. Now you and your favorite furry friend can travel safely and comfortably. For use with Animals Matter Companion Car Seat . This strap attaches through the seatbelt and clips to your pup's harness. Each car seat comes with one safety strap; get an extra strap as backup or for added security! Sizing:For Animals Matter Companion Car Seat Console : For dogs up to 12 lbs.For Animals Matter Companion Car Seat : For dogs up to 20 lbs.SAFETY NOTE: The strap should only be used with a harness and always turn off the air bag if you place the car seat in the front seat!Companion Car Seat is the trademark design of Animals Matter a registered trademark brand.