All the bottles were tested for a variety of criteria. We investigated materials and conducted drop tests to assess safety and robustness. Each bottle was handwashed, cleaned in the dishwasher, and sterilised repeatedly.
We assessed each bottle on its own merits and in conjunction with other similar models. The bottles were carried in changing bags and toppled on a variety of surfaces.
Of course, feeding is even more important than day-to-day convenience, so we paid close attention to how each teat worked and whether the flow of milk was too rapid or too slow. A crucial element for many parents is the anti-colic technology, so we made note of which bottles were recommended by Mumsnet users for helping their colicky babies.
Baby bottles are distinct among our review categories in that we don’t test the bottles with babies. Bottle use is so subjective that what works with one baby might not work with another, and we judged it unfair to expect one baby to switch between 15 bottles for several months.
Finally we set each bottle’s score against price and availability to find out which was our best all-round performer, and which four deserved honourable mentions.
Why you should trust us
Mumsnet product reviews are written by real parents and we work hard to provide honest and independent advice you can trust.
We spend hours researching, speaking to parents, analysing data and listening to experts before we test out the products on our shortlist.
Transparency is really important to us and that's why we're always upfront about how we tested the products we recommend. We won't always recommend the cheapest products or the ones with the most extra features. We write about products that we feel offer the best value to most parents – the one's we'd recommend to our own friends and family.
Our tester is a busy mother of two, who has been around the block when it comes to everything baby-related, including feeding, and our baby bottle reviews writer is a mum of three whose children were combination-fed as babies.