This is an excellent product for supplementing breastfeeding in the first 2 weeks, whether with expressed milk or formula, while you are establishing good latch and supply. The non-suckle feeding style allow you to dribble the fluid into baby's mouth at the breast and reducing concerns of artificial nipple preference. The small capacity better matches a newborn's stomach size - at birth 5-7ml and at one week 45-60ml. Larger bottles can influence consumption expectations.
The reputable brand and high quality silicone mean you can wash and reuse them.
