I used the woombie with my youngest ds and it was awesome! my babies never liked to be tightly swaddled, and I could never keep them from escaping out of any of the other swaddlers I used, or even the muslin blankets. Plus, the stretch to the fabric was really nice in the way that it allowed ds to move his arms and legs a bit, but was tight enough for him not to startle.
I'd highly recommend the woombie, but be advised that they run really small. I used the newborn size for about 6 weeks and my baby outgrew their mega baby size by 5 months. He was 9 lbs at birth and is 20 lbs and 28 in at 6 months old.
Anyway, they're well worth the money imo.
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