Cool sort redesigned PE shirt (7)
I believe the answer is:
hipster
'cool sort' is the definition.
The definition suggests a singular noun which matches the answer.
'redesigned pe shirt' is the wordplay.
'redesigned' indicates anagramming the letters.
'pe'+'shirt'='peshirt'
'peshirt' anagrammed gives 'HIPSTER'.
Can you help me to learn more?
(Other definitions for hipster that I've seen before include "Cool dude" , "Fashionable person" , "Trendsetter" , "Bohemian" , "kind of pants" .)