If you like the glossy look of satin but the comfy feel of flannel, bamboo is a great, sustainable substitute. Bamboo bedding has a subtle glossy finish. It's not as reflective as satin, but it has a nice sheen, and they are much, much softer than traditional cotton. And the great thing about bamboo sheets is that they are naturally antimicrobial, so they are great for people who have allergies or other health concerns.