Features To avoid skin irritation, it is important for the skin to have enough air contact. The breathable pacifier design with four large holes provides maximum airflow and keeps your baby's skin dry. The Ultraair pacifiers are suitable for babies up to 6 months old. The rounded nipple shield combined with the lightweight design ensures additional comfort and helps prevent skin irritation. 2 pacifiers Orthodontically shaped BPAfree Instructions With the included transport box, the pacifiers can be stored hygienically on the go and also sterilized in the microwave. To sterilize the pacifiers, rinse them thoroughly and place them in the box. Then add 25 ml of water to the box and microwave it for 3 minutes at 750 to 1,000 watts. After that, let the pacifiers cool for 5 minutes and pour out the water.