This is a 15-Perfect Fit harness set. I bought it for a 3.4kg, long-legged Toy Poodle. I'm selling it because she didn't like it and I didn't use it much, and now that she's an older dog, a regular harness is sufficient. Please take a good look at the photos for the size! The main body is XS, and the accessories are a set of XS and XXS. It fit my dog perfectly. It's adjustable with the belts, so it should work even if it's a little big or small. I chose burgundy for daytime and fluorescent yellow for nighttime. Instant purchase is welcome. Thank you very much!