ALL our items are available for immediate delivery!
XS Back 20cm/ neck 30-40cm/ belly 35-55cm/ up to max. 5kg
S Back 25.5cm/ neck 40-50cm/ belly 40-60cm/ up to max. 10kg
M Back 33cm/ neck 50-60cm/ belly 50-70cm/ up to max. 20kg

Back = back length
Neck = neck circumference
Chest = chest circumference
Belly = waist circumference

Image with information on how to measure your dog correctly