Amazon.com: Amazing Baby Transitional Swaddle Sack with Arms Up Half-Length Sleeves and Mitten Cuffs, Confetti, Sterling, Medium, 3-6 months, 14-21 lbs (Better Sleep for Baby, Easy Swaddle Transition)
Amazon.com: Nurturally Baby Anti Roll Support - Safe Breathable Fabric for Babies Age 3 to 6 Months Old, Designed in USA (Sleep Sack not Included), Portable Baby Sleep Support System Essentials for