Having done the 'hand pockets' I tested them out and realised that just the one thickness of double crocheted fabric wouldn't be enough to stop my poor old aged hands getting burnt. So, next plan was another layer.
I realised that another layer of crochet would make whole hand pockets far too stiff so resorted to knitting a layer to put inside the palm part of the pink/green pockets.
Good idea and it worked. (Tested it out on Sunday when I was cooking a chicken).