The most common and most likely answer to this crossword clue is the 7 letter word WEBBING
W
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B
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Buddy explains!
The straight part
We know that "Belt material" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case belt material = webbing.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 WEBBING mean?
WEBBING verb- To construct or form a web.
- To cover with a web or network.
- To ensnare or entangle.
- To provide with a web.
- To weave.
- A sturdy woven fabric.
- A belt and shoulder harness with attached pouches used to carry a soldier's equipment, water, ammunition, etc.
- The webs of the digits.
- The part of a baseball mitt between the forefinger and thumb; the web.
- Tapes conducting webs of paper in a printing machine.