The most common and most likely answer to this crossword clue is the 3 plus 3 letter word ICE BAG
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More clues leading to the result ICE BAG
- Two reserves for the cooler
- What physio may use to kill yak making ascent
- Cool blocks from me, also big ace with spin
- Cooler to decorate with taste
- Part of physio’s outfit that is taken around clubs absolutely not new
- It's cold comfort to serve up big ace
- In case of emergency take pain killer
- Sack full of diamonds
- Two reserves that may be needed against injury
Buddy explains!

The straight part
We know that "that may be needed against injury" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case that may be needed against injury = ice bag.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.