Garment feature (4)
I believe the answer is:
seam
'garment feature' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for seam that I've seen before include "Line of sewing - stratum of coal" , "Sewing join" , "Join - stratum of ore" , "Fabric joint" , "Join - thin layer" .)