GU Rib Knit Camisole Size: M Color: Blue Only worn once. The material has a substantial thickness, so you can wear it with confidence as a single layer. It's also stretchy, so if you're hesitant to wear it alone, you can layer it with a tank top or a compact T-shirt. You can wear it on its own, of course, or pair it with a cardigan or as an inner layer for a shirt.