This package has 4 color(one hundred,green,pink,pink,black) , It has only one size(3.0*60*85cm). ★Easy to use: dog car belt is very easy to use, you just need to fasten the swivel buckle on the pet collar or vest, the safety buckle on the other end is connected to the safety buckle of your car and the length can be adjusted according to the type of pet and the space in the car. Bring your pet and enjoy the wonderful trip with peace of mind.