ENOfficial
Anas ibn Malik said: ‘Allah’s Messenger (Allah bless him and give him peace) was of medium height, neither tall nor short. He was of handsome physique, and his hair was neither crisply curled nor smooth, brown of color. When he walked, he used to stride confidently ”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا حُمَيْدُ بْنُ مَسْعَدَةَ الْبَصْرِيُّ، قَالَ: حَدَّثَنَا عَبْدُ الْوَهَّابِ الثَّقَفِيُّ، عَنْ حُمَيْدٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ: كَانَ رَسُولُ اللهِ صلى الله عليه وسلم رَبْعَةً، لَيْسَ بِالطَّوِيلِ وَلا بِالْقَصِيرِ، حَسَنَ الْجِسْمِ، وَكَانَ شَعَرُهُ لَيْسَ بِجَعْدٍ، وَلا سَبْطٍ أَسْمَرَ اللَّوْنِ، إِذَا مَشَى يَتَكَفَّأُ.
sunnah.com