This is a onesie from Free People’s in-house activewear line, FP Movement, in their cult favorite Happiness Runs fabric. Color is called Vintage Snowstorm and has the iconic intentionally slightly faded dye style that their line is known for. Color is a neutral mushroom greige. Size XS/S. Square neckline with T-style back, which is most comfortable on my shoulders IMO. Super comfy while still having a fair amount of support. Only tried on.