Person staying cool thanks to ice packs (5)
I believe the answer is:
stoic
'person' is the definition.
(stoic is a kind of person)
'thanks to ice packs' is the wordplay.
'packs' indicates the answer is hidden within the clue (I've seen 'packing' mean this).
'STOIC' can be found hidden inside 'thanks to ice'.
'staying cool' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for stoic that I've seen before include "Greek in school" , "Impassive type" , "One showing endurance during adversity" , "philosophical type" , "Someone seemingly indifferent to pleasure or pain" .)