I only tried putting my dog in it inside the house. I'm selling it because it didn't fit my dog (11kg). External dimensions: Width/approx. 51cm x Depth/approx. 30cm x Height/approx. 40cm ※Carrier body only. Does not include straps, etc. Internal dimensions: Width/approx. 49cm x Depth/approx. 28cm x Height/approx. 37cm Weight: Approx. 2.1kg Weight capacity: Up to 15kg ※This does not mean that dogs up to 15kg will definitely fit. Please make your judgment based on the internal dimensions.