What is the difference between carrying backpacks from each other?

Backpack-carrying "Classic" and "Light" are identical in design. The straps of the backpack can be worn behind the back only in parallel.
Convenient for those who are planning to use a backpack for the first time. They differ only in the presence of a pocket on the back (Classic) instead of a mesh (Light). The straps of the "Smart" backpack are specially shaped for comfortable wearing, crossed on the back.

Due to the fact that the straps are not thick, no thickness is formed at the intersection of the straps on the back, which is especially convenient for wearing such a backpack under a slingokurt.

On the back of the backpack there is a flat pocket without zippers for storing small items.

The "Premium" carry-on backpack is made from a unique diagonal weave scarf made from 100% cotton. This scarf fabric is made with a special jacquard weave, it is thin enough to keep it warm even in summer. Due to its unique properties, the fabric takes the shape of a baby's figure, which feels so comfortable as if it is sitting on the arms of the mother.