Material somewhat flexible, last I checked (7)

I believe the answer is:

elastic

'material' is the definition.
(elastic is a kind of material)

'somewhat flexible last i checked' is the wordplay.
'somewhat' says the answer is hidden in the clue.
'ELASTIC' can be found hidden inside 'flexible last i checked'.

(Other definitions for elastic that I've seen before include "Fluid" , "Resilient" , "Able to give a bit" , "Narrow band of rubber" , "It's lace (anag.)" .)

I've seen this clue in The Telegraph.

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