We received it as a gift from friends who had a 10 month old baby. They said it was the best thing and they could not have lived without it! We looked at it and thought…no way are we putting our son in a “straight jacket”, but we tried it and he LOVED IT! The first night he was in it he slept 7 hours! We have been using it ever since and he has always slept at least 7 hours and usually more than that! THANKS!