ALL our items are available for immediate delivery!
S Back 22.5cm/ Neck 28-37cm/ Belly 44-55cm/ Weight up to max. 15kg
M Back 26cm/ Neck 34-40cm/ Belly 51-65cm/ Weight 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