- 3S → neck circumference about 16-21 cm, length 8.5 cm
(Extremely small Chihuahuas, Yorkies, Pome, etc., weighing about 1 to 2 kg)
Ice pack size up to approx. 6×7cm
- SS→ neck circumference about 18-24 cm, length 9.5 cm
(Small Chihuahuas, Pome, Small Toy Poos, Yorkies, Dachsh, Maltese, Smooth Dogs, etc., weighing about 2-3 kg)
Ice pack size up to approx. 7×7cm
●S → Neck circumference about 22 cm to 27 cm, length 11 cm (the longest part in the center)
(Chihuahuas, Maltese, Yorkies, Pome, Toypoos, etc., weighing about 3-5 kg)
Ice pack compatible size up to approx. 8×9cm
●M → Neck circumference approx. 26 cm to 34 cm, length 12 cm
(Shih Tzu, Toy Poo, Shuna, Mameshiba, Bekinese, A.E. Cocker, etc.)
Ice pack size up to approx. 9×12cm