I've been reading the reviews on Amazon and they are surprisingly pretty bad. A lot of people said they fall apart/rip after a few washes or they've had issues with the zippers falling off. I'm thinking of getting one only because my son self-soothes with his A&A blankets during naps and I can't put one in the crib with him at night. I figure he would be able to suck on the sleep sack instead. He's pretty strong and kicks a lot in his crib so I'm afraid he would destroy any sleep sack that's not well made. Anyone have any good experiences with them?