The Ollie was the 4th type of swaddle that I’ve tried. They either couldn’t contain the arms, caused him to be too hot, or gave him too much room for movement. He was sleeping 2.5-3 hour stretches at night with the other swaddles. The week that I switched to the Ollie, he started sleeping 4-5 hours at a time. It also calms him considerably, and he’ll just lay in his bed and put himself to sleep. I was skeptical at first that this would make much of a difference but it definitely has!! Thank you ...