1. It replaces four things at once
A winter dress usually starts with four layers underneath: a bra, a shaper, tights and briefs. Four waistbands and straps, all fighting each other by lunchtime.
This bodysuit is all four, knitted as one piece: a wireless bra, a smoothing body, a built-in panty and fleece-lined tights. You step in once, and you’re dressed underneath until bedtime.