Eternal youth and beauty

فَجَعَلْنَـٰهُنَّ أَبْكَارًا

And made them virgins,

۞ وَيَطُوفُ عَلَيْهِمْ وِلْدَٰنٌ مُّخَلَّدُونَ إِذَا رَأَيْتَهُمْ حَسِبْتَهُمْ لُؤْلُؤًا مَّنثُورًا

There will circulate among them young boys made eternal. When you see them, you would think them [as beautiful as] scattered pearls.