Winter Olympics down jacket 4F is a Polish brand. Polish brand 4F has sponsored eight Winter Olympics delegations, and this country is about to enter the ranks of developed countries. The uniform of the Polish delegation is designed in pure white, inspired by winter adventure and snow sports, and designed and manufactured by Polish clothing brand 4F. The overall design is very simple and fashionable, wearing a hat has the visual sense of a spacesuit, and the film is quite atmospheric.

Polish sports brand 4F sponsored delegations from Poland, Slovakia, Latvia and Portugal. Italian sports fashion brand FILA sponsors Poland and Kappa sponsors Mexico. It is worth noting that not only sports brands, but also some fashion and leisure brands are among the sponsors of winter Olympics clothing.

Feather characteristics

Down in cotton, wool, silk, down four natural warm-keeping materials, down has the best warm-keeping performance. In the past two years, duvets have spread rapidly in China. From a modern point of view, the health care function of duvet is determined by the unique softness and warmth retention of down and good moisture absorption and divergence.

There is no warm-keeping material in the world that exceeds the warm-keeping performance of down, because down is a star-shaped structure, and each filament can be seen as a fish scale under a magnifying glass, with countless tiny pores and a lot of still air on it. Due to the lowest air permeability, the down has a good thermal insulation performance and is elastic. Test down with down content of 50%.

The lightness and bulkiness of down is 2.8 times that of cotton and 2.2 times that of wool, so the down quilt is not only soft and warm, but also has a good touch to the skin. China down jacket became popular in the early 1980s. At that time, the fabric grade and processing level were not high, the style was monotonous, the cashmere content was low, the filling amount was large, and the appearance was bloated, so it was called bread coat.