Wool. Lots of wool.
This is very nice!
I agree with Cormaster9000 - it's very soothing. The volume levels and amount of reverberation on all instruments are just right. And well, the atmosphere you've created is pretty damn perfect if I may say it myself. :D Though I think a fading ending would fit better.
Something that would be a nice addition (but certainly not necessary) would be some water droplets or some other kind of water sound in the background. Just a suggestion...
Favorited for sure!