Nation LTD Isha Turtleneck Tank | Shiny Moonbeam9109 LTAS The Isha Turtleneck Tank plays it cool with quiet texture and undeniable presence. Knit from alpaca yarn in our signature fit, its ribbed pattern adds subtle depth, while the turtleneck and sleeveless turnback shoulders bring soft structure with a hint of edgeplus just enough warmth, with none of the bulk. This one comes in Shiny Moonbeam. Fit: Signature Nation fit. Slightly easy through the body, not fitted or oversized. Model wears a S.