The Safe Sleep Simple Swaddle w/ Grey & White Dots is recommended for babies 0 - 3 months and up to 16.5 pounds. It's cozy comfort will keep baby feeling snug and secure for a good night's sleep. It keeps baby covered and warm without loose blankets and the Bottom Up zipper allows for easy changing without waking baby. It is made of 100% cotton. Care instructions: machine wash warm in gentle cycle with like colors, use only NON-chlorine bleach when needed, tumble dry low. Close all fasteners and zippers before washing, Do NOT wash with delicate fabrics and do NOT iron.