Car Seat Size Guide


Where's Winnie car seats come in two sizes - small and large. The large car seat is 20cm wider than the small car seat. All other dimensions are the same.


The small Isofix car seat can fit in the front or back seats of the car. The large car seat can only fit in the backseat of the car due to it's width. 


Please note the large car seat does not have Isofix clips like the small car seat.


The small car seat is designed for toy and small to medium sized dogs, up to around 10kg, although this is a loose guide as all dogs are built differently and other factors such as whether your dog likes to curl up or not can have an impact. 


The large car seat is designed for medium sized dogs or a couple of smaller dogs. 


External Size Internal Size Side Height Back Height
Small Isofix Car Seat 55cm x 55cm 30cm x 30cm 20cm 30cm
Large Car Seat  75cm x 55cm 50cm x 30cm 20cm 30cm


Please check our Instagram page for real-life pictures of dogs in our car seats. We always try to include their breed and weight where possible. If you have any queries about whether your dog will fit the car seat please get in touch on Instagram, Facebook or by email at