I'd like a few of these for wearing under things. Gap do nice ones www.gap.co.uk/gap/ribbed-long-sleeve-turtleneck-top-in-modal/000397447.html?dwvar_000397447_size=1530&dwvar_000397447_fit=regular&dwvar_000397447_color=000397447000&cgid=gap#q=turtleneck&prefn1=gapIncDepartmentTags&prefv1=136&start=43 and I've got a couple, but they're out of the colours I like in my size. I've tried similar ones in Uniqlo but they're too short in the sleeves and the neck is too loose and floppy.
I'm happy with modal/viscose/cotton, or a very light fine wool, but don't like acrylic or polyester. Neutral colours like black and grey are best, or a subtle stripe. Budget is high street. Thanks in advance!