SINGLE CAR BOOSTER SEAT Size Guide
The single seats are only suitable for one small dog, roughly the size of a mini cavoodle, dachshund, frenchie, maltese, boston terrier, westhighland white terrier, pugs, jack russells or similar. We suggest under 10kg as a general guide, although long legged pups may be too tall while some frenchies up to 12kg might still be very comfortable. Also, if your pup moves around a lot or likes to jump out of car seats, this may not be the seat for them, the double seat having a wider surface area may be better. Please compare the measurements between the single and double seat to determine which one best meets your needs.
Internal: 34 (L) x 34cm (W) x 20cm (H)

We have two sizes in our car booster seat range, we consider this one to be a large / double size. They are the length of two average car seats, so please check the measurements below if you travel with children in the car too.
Double Size Car Booster Seat Measurements:
External: 80 (L) x 42 (W) x 36cm (H)
Internal: 70 (L) x 35 (W) x 20cm (H)
Boost: approx 16cm
Examples of two small dogs that can share this booster seat:
Dachshunds, maltese, boston terriers, pugs, west highland white terriers, toy-mini cavoodles and jack russells.
Examples of one medium dog that may fit in this booster seat:
Cocker spaniel, whippet, beagle, Italian greyhound, mini labradoodle, mini schnauzers, cavalier king charles.