Volume
The working volume of the bottle is the amount of liquid for which it is designed. If you fill it “under the cork”, a little more drink can fit inside, but this is still undesirable.
The volume is selected by the manufacturer, taking into account the age the product is designed for and what type it belongs to (see above). So, for newborns, 100 – 200 mL is most often enough, in the category "from 6 months" there are already models for
300 – 400 mL, and for older children (from 3 years old) drinkers of
500 mL or more are produced, similar to flasks of "sports » appointments for adults. All these values are quite justified from the point of view of science. So when choosing, you should focus mainly on the “age category” and type of bottle, and only then — on its volume; especially since models of the same class and in terms of capacity do not differ much.
Age
Age category for which the bottle/drinker is intended.
Small children grow and develop very quickly, so the age category of children's products is indicated not by years, but by months. Each age has its own characteristics of physical and mental development, and these features are taken into account by the manufacturer in the design of bottles and drinkers. It is extremely undesirable to deviate from these recommendations: a container that is not suitable for age can be uncomfortable for the baby, and even dangerous.
Now there are such age recommendations:
for newborns,
from 3 months,
from 6 months,
from 9 months,
from 12 months,
from 18 months.
More features
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Anti-colic system. A device by which small children do not swallow air when drinking (which is the main cause of colic). The purpose of an anti-colic bottle is to create positive pressure. Depending on the implementation, such systems can be different: with an anti-colic valve at the bottom of the bottle, built into the rubber nipple so that it remains filled in any position (including horizontal), with a special ring or reservoir inside the container.
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For thick drinks. Containers designed for thick drinks and foods, such as cereals or fruit purees. Most often, such containers are equipped with nipples or spouts with large holes that allow the contents to flow out at the right speed.
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Wide neck. In this case, it means not just a container with a large diameter neck, but a bottle (see "Type"), designed for "wide" nipples. Teats are available in two standard sizes — regular and wide; accordingly, bottles are also made for these two sizes. The wide neck is convenient, first of all, for the parent: it is easier to wash and “refill” the bottle through it.
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Measuring scale. The measuring scale is a marking, thanks to which you can determine the amount of liquid poured into the container. This greatly simplifies the dosage — in fact, the bottle itself turns into a device for measuring volume. The measuring s
...cale can be useful not only when “filling” the container, but also in order to estimate the amount of liquid left after the baby has eaten.
— Pens. Additional pair of handles, allowing the baby to comfortably hold the container in his hands. Often made removable, which simplifies storage and transportation.
— Carry strap. The presence of a classic strap that allows you to hang a bottle or drinker or carry it for a walk, which makes handling the model more comfortable.
— Brush for cleaning. The presence of a complete brush, firstly, eliminates the need to search for such a one, and secondly, it contributes to a more thorough cleaning, since the native brush is better suited for a specific bottle model and is able to penetrate into those places that other brushes may not touch.
