Extra Cozy And Featured In Our Signature, Hand-Painted Prints, Our Quilted Sleep Bags Are A Safe And Warm Blanket Alternative During The Cooler Months Of The Year. Quilted Layers Of Soft Cotton Muslin Keep Heat Inside While A Unique, Breathable Design Allows Air To Flow Freely — Creating A Comfortable And Cozy Sleep Environment For Baby Throughout The Night. Included Are Parent-Loving Features Like A Two-Way Zipper For Easy Nighttime Diaper Changes, And Machine Washable Cotton Muslin That Gets Softer With Every Wash.Premium, 100% Cotton Muslin Quilted Sleep Bag