Real lambskin jackets cannot be machine washed, but artificial lambskin jackets can be machine washed. Lambskin jackets are warm jackets made of real goat wool, which are rich in animal protein fibers. They are easy to deform and shrink after machine washing, affecting the warmth of the clothes. The fabric of lambskin jackets is actually artificial cashmere, mainly made of polyester and acrylic, which is relatively washable.
The reason why lambskin jackets are called "fleece" is because this kind of "fleece" is generally a synthetic fiber product, mostly a blend of 70% polyester and 30% acrylic. It feels soft and has good warmth retention. It looks very similar to real "lambskin", but it can only be "fleece" rather than "wool", so it is necessary to distinguish them when purchasing such clothes.
Since the fabric composition of lambskin jackets is not real animal wool, it is easier to take care of. Artificial fibers have good elasticity and are also washable, so lambskin jackets can be directly machine washed. However, it is best to turn the lint side to the inner layer when washing in the machine to prevent the clothes from shedding after washing in the machine.
Clothes with good thermal insulation properties should not be washed frequently. No matter how durable they are, their thermal insulation properties will decrease with each washing. If they are not very dirty, it is best to choose partial washing or hand washing.