Meta description part character number on your 12-stul.ru web site's code section is 125. Meta description section is seen as your site's explanation in search engine's result page lists. There are warning in search engines optimization criterias explanation to do not use too many keywords in this section. Because search engines display result pages almost 150 characters, you should take care to not get over 150 character when you write a sentence. Sentence or sentences which you wrote , are seen very successful by us.