The Pretty Pennant Airflow Wearable Blanket is for babies 0-6 months. It features an inverted zipper for easy diaper changes, and mesh side panels to help prevent overheating. It is made of 100% cotton knit with linen trim. Mesh panels are 100% polyester. Care instructions: machine wash cold, use NON-chlorine bleach if desired, tumble dry low, and warm iron if desired.