Type... Romper, T-shirt Size... L (also fits those who wear XXL, as it's about the size of an L) I bought these to put on my Bichon Frise (8.5kg), but the neck area doesn't stretch, so I haven't even tried them on (because their head is quite voluminous). It seems like their body would fit with plenty of room. I fell in love with these two cute outfits at first sight, but I'm selling them.