When my mother first took me here as an early teen, I was so shocked that there was so much amazing yarn hidden in an obscure building on a random floor! The selection is great, and I have to agree with Ava that you find everything from merino to camel. In my experience, the staff is extremely knowledgeable and helpful (as much as they can be given the occasional peak of customers). There are always a bunch of interesting samples and finished knits all around the store that give me inspiration and new ideas!