Gently used, size 3-6 months. Per the website: DESIGN The lightly weighted Zen Footie PJ from Nested Bean allows your baby to feel like they are sleeping in your arms. Your reassuring touch can signal comfort, security and love to your baby, allowing them to calm and sleep peacefully; the weighted Zen Footie duplicates that sensation. Based on the medically proven benefits of touch, the Zen Footie includes a lightly weighted areas on the center (where your palm would go) to simulate the feeling of being held. About This Product - Perfect for active sleepers who don’t like their legs confined - Can be worn in car-seats, strollers or swings with harness - Zen Footie Classic is perfect for year-round comfort CLASSIC MATERIAL Made from 100% luxuriously soft cotton for your baby's tender skin and year-round comfort; it is washer and dryer safe. The weighted pads are filled with non-toxic poly beads, the same as you find in children’s stuffed toys. SAFETY The Zen Footie exceeds rigorous safety standards, both mandatory and voluntary, by over 8 times.Tests have been performed in leading safety laboratories and inspected by pediatric pulmonologists for breathing safety.