The most common and most likely answer to this crossword clue is the 7 letter word BATWING
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More clues leading to the result BATWING
Buddy explains!

The straight part
We know that "like some sleeves" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like some sleeves = batwing.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.
What does BATWING mean?
BATWING noun- The wing of a bat, or its shape.
- Several South or Southeast Asian species of tailless dark swallowtail butterflies in the genus Atrophaneura.
- An area of flabby fat under a person's arms.
- A long sleeve with a deep armhole, tapering toward the wrist.
- Shaped like the wing of a bat.