Some boots and a light shoe (6)
I believe the answer is:
sandal
'shoe' is the definition.
(I know that sandal is a type of shoe)
'some boots and a light' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'SANDAL' is hidden within 'boots and a light'.
(Other definitions for sandal that I've seen before include "Openwork shoe" , "Item of footwear" , "Light open-toed shoe" , "Casual footwear" , "Light strapped shoe" .)