Slip them under your regular coat and no one will be wiser, provided you choose a dark shade and a slim enough fit.
While it might seem like a lot to pay for a tank top, the price-per-wear math makes it practical. Throw it under any sweater and you'll insulate without creating Michelin man arms. Victory.
Mimics the warmth of a turtleneck, then slips over your head when you want to unveil a prettier neckline.
Way, way warmer than doubling up on sheer pairs, they're perfect under pants on ultra-frigid days.
Swap thick sweater dresses for a leather sheath.The fabric's ridiculously warm but not bulky, so tossing a long sleeve tee underneath and a cardigan over will still look streamlined.