Why are gas masks, submarine life jackets and the like designed by Russia so ugly?

It's normal that the same thing has different design features in different countries, which may be related to the country's history, tradition, national characteristics, actual national conditions and other factors.

but especially for military supplies, practicality comes first. For example, the gas mask and submarine life jacket mentioned by the landlord, these things are not for you to wear to participate in beauty contests. Why do you want to make them so beautiful? ! ~~