P 55 x L 30 x K 55 cm
Only for very small pets!
The width of 30 cm (and length of +\- 50) is much less in practice due to the thickness of the side and back cushions. The seat cushion is much smaller than the base and doesn't fit. You need to replace it with a bigger one. The openings for the car seat belt are a plus but I doubt they will hold long since they are placed in the very thin base and not reinforced. My miniature dachshund does not fit in. Please invest in something safer.