My Jeter, who is 14 months old, seems to have a silky coat, his hair is easy to comb and care for. It's alway's been wonderfully silky sense he came home to me at 10 weeks of age. The only thing I would change about his coat, is it's thickness, he has a thinner coat.
Axl's is 6 1/2 months old and hair is cotton coat with out a doubt! His hair has a wave to it and it mats easily. I have to comb him every day or else he would be one big mat! I am now using Garnier Fructis Shine spray on him after his bath and it helps make it silk-ish. I accidently grabbed it by mistake once when I thought I had grabbed the doggy spray between baths to help keep them smelling fresh, it ended up being a mice mistake as I love what it did to his coat
Yumi Yasha I am not sure of, she seems to have gone through a change. She is 6 1/2 months old and her hair is just starting to get growing longer and thicker and it is coming in silky, I think!