PBK’s new wearable blanket features a Velcro swaddle band (works with arms in or out) and an inverted zipper (better for diaper changes), plus it’s monogrammable, made from organic cotton, and cuter than most sleep sacks out there. The newborn size fits up to 12 pounds, and the small size fits up to 18 pounds. $39.50 at potterybarnkids.com.