- 3S→ neck circumference about 16-21cm, length 8.5cm
(Tiny Chihuahuas, Yorkies, Pomes, etc., weigh about 1 to 2 kg in the first half)
Refrigerant size up to about 6×7 cm
- SS→ neck circumference about 18-24 cm, length 9.5 cm
(Small Chihuahuas, Pome, Small Toy Poo, Yorkies, Dachs, Maltese, Smooth Dogs, etc., weighing about 2-3 kg)
Refrigerant size up to about 7×7 cm
●S → Neck circumference about 22 cm to 27 cm, length 11 cm (longest point in the center)
(Chihuahua, Maltese, Yorkie, Pome, Toy Poo, etc., weighing about 3-5 kg)
Ice pack size up to about 8×9 cm
- M → Neck circumference about 26cm to 34cm, length 12cm
(Shih Tzu, Toy Poo, Shuna, Mameshiba, Bekingese, A.E Cocker, etc.)
Refrigerant size up to about 9×12 cm