Note: Do not choose the size based on your usual height. Measure your pet’s neckline, chest and back length and consult the size guide before purchase. company grows, choose one size larger. This 2-legged round neck sweater is made of woolly fabric - Soft and comfortable, it will keep your pet warm in fall / winter - Hand wash only. SIZE M: neck 8.66 inch / 22 cm, chest size 12.60 inch / 32 cm, back length 8.66 inch / 22 cm