The huuru'in(the women of jannah) and who they are?

 The huuru'in(the women of jannah) and who they are? 

The huur'in are women of jannah which Allah has made for the believers when they enter into jannah. 

Allah says in Quran, 

Ad-Dukhan 44:54

كَذَٰلِكَ وَزَوَّجْنَٰهُم بِحُورٍ عِينٍ 

Thus. And We will marry them to fair women with large, [beautiful] eyes.

As reported in hadith, 

Muhammad reported that some (persons) stated with a sense of pride and some discussed whether there would be more menin Paradise or more women. It was upon this that Abu Huraira reported that Abu'l Qasim (the Holy Prophet) (ﷺ) said:

The (members) of the first group to get into Paradise would have their faces as bright as full moon during the night, and the next to this group would have their faces as bright as the shining stars in the sky, and every person would have two wives and the marrow of their shanks would glimmer beneath the flesh and there would be none without a wife in Paradise.

Sahih Muslim 2834.

In another hadith, 

Mu'adh bin Jabal (May Allah be pleased with him) reported:

The Prophet (ﷺ) said, "Whenever a woman harms her husband in this world (that is without any due right), his wife among the (Houris in Jannah) says: 'Youmust not harm him. May Allah destroy you! He is only a passing guest with you and is about to leave you to come to us". [At-Tirmidhi].

Riyad us Saliheen. 

Book 1, Hadith 287.

The huur'in are the women of jannah and very special made for their husband 

No jinn or man has even seen them

Allah says, 

Ar-Rahman 55:70

فِيهِنَّ خَيْرَٰتٌ حِسَانٌ 

In them are good and beautiful women. 

Ar-Rahman 55:72

Fair ones reserved in pavilions -

Ar-Rahman 55:74

Untouched before them by man or jinnī -

So Allah says their glance is only for their husband and no men again.

Allah says,

As-Saffat 37:49

As if they were [delicate] eggs, well-protected.

As-Saffat 37:49

كَأَنَّهُنَّ بَيْضٌ مَّكْنُونٌ 

As if they were [delicate] eggs, well-protected.

The prophet pbuh said, 

When one of the women of paradise descend to this world while at darkness, she can lighten the whole world 

Such are women Allah preserved for believers that one can even see her marrow. 

The reason women are in jannah is because they are the desire of man and beauties of everything. 

But a woman who worked hard and strive in this world and enters jannah will be twice beautiful than the huur'in and be the queen among them.