Age
The age for which the pacifier / pacifier is designed, more precisely, the minimum age from which it can be used. Age is indicated in months: for example, 6+ means that the product can be used from six months.
In the first months of life, the growth and development of the child is very fast, in fact, every month brings something new. Therefore, it is impossible to deviate from age recommendations: a nipple / pacifier chosen not for age will be uncomfortable at best, and even harmful or even dangerous.
Note that models are also produced for children born prematurely; such products are labeled accordingly.
Now there are such age recommendations:
for premature babies,
for newborns (0m+),
from 1 month (1m+),
from 2 months (2m+),
from 3 months (3m+),
from 4 months (4m+),
from 6 months (6m+),
from 9 months (9m+),
from 12 months (12m+),
from 18 months (18m+).
Material
The main material used in the construction of the pacifier/pacifier, more specifically the material from which the nipple is made, is the part that the baby puts into his mouth when he uses it.
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Latex. Natural rubber material. Latex is less strong and durable than silicone, although it still tolerates stretching and even biting quite well. In addition, it has a specific smell and taste, and although it is hypoallergenic, due to its natural origin, there is still a certain probability of an allergy to such a product (although this probability is extremely low). Therefore, latex nipples/pacifiers are not recommended for children with an increased tendency to allergies. On the other hand, latex products are softer and more flexible, perfect for babies who "didn't appreciate" silicone nipples. Yes, and the price of this material is lower.
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Silicone. Strong and durable material, which is also completely neutral and does not cause allergies. Silicone has no taste and smell, and heat resistance allows it to be sterilized in boiling water. On the other hand, such nipples/pacifiers are more rigid than latex, and some children do not want to take them, and this material is more expensive.
In box
Additional items included in the design or delivery of the pacifier/pacifier.
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Cap. Protective cap that can be put on the nipple during non-working hours. This greatly simplifies the storage of the product: the cap protects against contamination and may be useful even if the nipple / pacifier is simply lying in an open place (because dust can settle on it), not to mention troubles like falling on the floor. However, the cap is suitable only for a short stay in the open; for long-term storage, it is better to use a container (see below) or at least an impromptu case.
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Ring. The handle in the form of a ring is equipped exclusively with pacifiers. Such a handle is convenient for parents — in particular, you can quickly and effortlessly remove the pacifier from your mouth, even if the child actively objects to this. At the same time, pacifiers without a ring are also available — they are more compact and better suited for active babies who may not release their nipples while on the move.
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Chain. A device for hanging a pacifier around the neck (only they are equipped with chains, such equipment does not make sense for nipples). Note that the name "chain" is conditional, most often it is not a metal chain (uncomfortable or even dangerous for a child), but a narrow ribbon made of soft fabric.
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Container.... Special container for storing and carrying nipples/pacifiers. Like the cap described above, it is primarily intended to protect against contamination; the pacifier/pacifier fits into the container as a whole, making this option perfect for long-term storage. Of course, improvised packaging can also be used for such storage; however, a complete container is generally more convenient and hygienic.
— Additional nozzle / mesh. Optional silicone cap or mesh supplied with nibbler (see "Type"). As you use the nibblers inevitably wear out, besides, the child can simply chew on the nozzle. Instead of buying a new nibbler, it is easier and cheaper to change its working part; the presence of a nozzle / mesh in the kit eliminates the need to buy a replacement part separately. This is especially convenient for silicone nibblers — spare nozzles for them are quite rare on the market.