Needed if it’s cool when we take a rest break outside (7)
I believe the answer is:
sweater
'needed if it's cool' is the definition.
I can't tell whether this defines the answer.
'we take a rest break outside' is the wordplay.
'take' is a charade indicator (letters next to each other).
'break' indicates an anagram.
'outside' indicates putting letters inside.
'rest' anagrammed gives 'ster'.
'we'+'a'='wea'
'wea' going within 'ster' is 'SWEATER'.
'when' is the link.
Can you help me to learn more?
(Other definitions for sweater that I've seen before include "Heavy jersey" , "Wear" , "Top" , "Jumper (7)" , "Re waste: it's a garment" .)