I loved this item so much, both for its stretchy fabric and its color scheme, and I used to dress my dog in it all the time, but unfortunately, it's now too small because my dog has gained weight. I'm so disappointed. The fabric is soft, so I think it would also be good as pajamas. The size is approximately 37 cm for the longest part of the back, and 21 cm for the longest part of the side. The longest part of the front is approximately 25 cm. The neck circumference, measured around the outside, was approximately 27 cm. It's easier to understand if you compare it with the clothes you already have. The size notation is D3, so it's suitable for Dachshunds and Jack Russell Terriers! Please continue to use it if you like! I am also listing other items. Stretchy dog clothes with a blue and white striped design, perfect for small dogs with a round neck. - Color: Blue and white stripes - Design: Ribbed - Size: For small dogs - Features: Stretchy material - Neckline: Round neck Thank you for viewing. Type...Tank top/Camisole Size...L Other...Spring/Summer clothes