I am going to be very honest here.... I was very hesitant to make this purchase at first. I was very uneasy about the idea of the sleep sack being weighted and what that meant for my baby's safety. After having way too many friends rave about this sleep sack, I decided to go for it and pay the extra few bucks for 45 day returns in case my little one didn't like it or I regretted my decision. It is safe to say I will be purchasing 100 more if I can to have a rotation. This sleep sack has been a game changer for us and for the comfort of our girl. Her sleep has improved ten fold. If you are on the fence like I was - just pull the trigger. You won't regret it.