The modern market of children's footwear offers the huge choice of models of winter footwear which is made of various materials. Qualitative footwear has to be easy, warm, beautiful and convenient. All this in many respects depends also on its sole.
Material of a sole of winter children's footwear
The sole is the first what it is worth paying attention when choosing nurseries sapozhek to. It has to be rather flexible, then footwear will provide freedom of movement to the child. At the same time the sole reliably to keep warmly children's legs, has to be rather dense. The qualitative sole from elastomer and thermoelastoplastic well holds heat even at big frosts. These materials have high coefficient of friction, so, such sole prevents sliding and will provide stability to the kid.
Producers guarantee frost resistance of a sole from elastomer and thermoelastoplastic at a temperature up to-50 degrees.
And here the sole from polyurethane can pass cold. The made foam polyurethane distinguishes existence of a small time by surfaces and lightweight of a sole. Except the low heatpreserving qualities, footwear with a sole from polyurethane slides. Sometimes producers for the solution of this problem to a thick polyurethane sole attach the second thin layer preventing sliding. It is quite suitable option for not too cold winters.
On a hard frost the sole from polyurethane loses elasticity and can break.
What to pay attention to
That winter footwear did not slide, the drawing of a protector of a sole has to be "versatile". Deep grooves of various configuration on a running surface of a sole provide stability of boots. Reliably to keep internal heat of footwear, the sole has to be 5-7 mm thick or even a little more. At the same time too thick sole can be inconvenient for the child. It is also worth checking a way of fastening of a sole to top material. Rather reliably glue fastening. If the sole is sewn - usually in such a way supplement glue fastening - the sole can keep more strong. But in some conditions over time threads can become thinner under the influence of water, chemical reagents and temperature differences. The most reliable soles – cast. They can be distinguished on existence of thin convex membranes – the small seams located in front of and behind a sole. They are formed at production as the compression mold represents two detachable parts, and during filling material flows into joining between them. Then the seam is straightened, but it is noticeable also on a finished product. Insoles of children's footwear need to be dried regularly therefore they should not be pasted to a sole.