The Avent 125ml feeding bottle is designed for newborns and typically features the following details:

- Height: Approximately 15 cm (5.9 inches).

- Size: 125 ml (4.2 oz) capacity, suitable for small feedings.

- Nipple Description: The bottle usually comes with a soft, silicone nipple that is designed to mimic the feel of breastfeeding. It typically has a slow flow rate, ideal for infants, and may feature anti-colic technology to reduce gas and discomfort.

These specifications can vary slightly based on the specific model or version. Always check the packaging or manufacturer's details for precise information.