Sleep

How would it be to sleep this well? Or even be able to be this relaxed? My Baby Sagey (male maltese) has such a cute black nose you will see on the right. He is on his back with all his little paws in the air. He is completely sprawled out. I guess I should be happy that he is so comfortable.
If you had told me I would love a dog this much, I would have laughed at you! He and Daisy are truly my babies.