ErgoPouch Side Zip Premium Sleeping Bag Weighting: 2.5 TOG (for 15-21 degrees Celsius) Size: 3 - 12 months Colour: Blue with Dragonflies Used for 3 months. Excellent condition. Design for tummy sleepers. “ Designed specifically for infants and toddlers who prefer to sleep on their tummy, our Side Zip Premium Sleeping Bag features a side zip placement that prevents the zip tab from digging in while they sleep. The 400 thread count organic cotton outer feels smooth and luxurious on baby's skin, while stretch jersey cotton shoulder inserts allow baby to move freely and stay comfortable.”