Jumper has ruined front, covered in Jeyes fluid (6)
I believe the answer is:
jersey
'jumper' is the definition.
(I've seen this before)
'ruined front covered in jeyes fluid' is the wordplay.
'front' suggests taking the first letters.
'covered in' indicates putting letters inside.
'fluid' indicates anagramming the letters.
The initial letter of 'ruined' is 'r'.
'jeyes' is an anagram of 'jesey'.
'r' put into 'jesey' is 'JERSEY'.
'has' acts as a link.
(Other definitions for jersey that I've seen before include "Breed of cattle" , "Channel Island - cow" , "Clothing" , "Something one may put on" , "farm animal" .)