Yoga accessory (3)
I believe the answer is:
mat
'yoga accessory' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mat that I've seen before include "Piece of material for wiping feet on" , "Small protective floor-covering" , "Small carpet" , "Foot-wiper on which welcome may be kept" , "Opening of good book" .)