Nested Bean Zen Sack™ Classic

In good used condition with signs of wear. We used this until my child was about 4 months. I would say size is 0-4/5 months. Really helped him sleep well!!! DESIGN CONCEPT Our Zen Sack Classic wearable blanket is designed for self-soothing and sounder sleep. The gently weighted Zen Sack provides uninterrupted comfort by applying pressure only where babies are naturally held. This secure feeling eases the swaddle transition and helps babies self-soothe through sleep disruptions.