Review on Parents' Picks Award-Winning Amazing Baby Transitional Swaddle Sack: Arms Up Sleeves, Mitten Cuffs, Tiny Bear, Sterling, Medium Size (3-6 Months) - Ensure Better Sleep and Easy Transition by Jermaine Fleming

Oh my god just buy that! I have had my son wrapped in a blanket to sleep since day one (he is 4 months old) and the other day he rolled onto his stomach so I figured I must give him something to use his hands/arms in . I ordered this one because it had good reviews and it was cheaper than other sleeping bags. It exceeded my expectations! I put him in it and put him awake in the crib and he fell asleep and didn't move all night. My little Rolly Polly is usually everywhere and he slept soundly for almost 10 hours! The ONLY thing I want to say is that it's on the small side (less than the 10th percentile) and I bought the medium. The neck area is a bit tense. It's okay, and once I moved the material around a bit everything was fine, but not as loose as I expected. (I don't think it will last up to 6 months.) But for the price, I would be fine with a larger size.