That product is great to protect your dog or cat from cold evenings and mornings but also is a beautiful stylization.
Shirt is available in 5 sizes:
XS – length 21cm, circuit 24 – 30cm
S – length 23cm, circuit 32 – 40 cm
M – length 27cm, circuit 40 – 48cm
L – length 32cm, circuit 48-54cm
XL – length 36cm, circuit 54 – 60cm