Value Bamboo Viscose Undershirts: Peony & Buyoh vs 5 Brands You pull a bamboo viscose undershirt out of the drawer, check the price tag again, and wonder if it actually earns its spot over a plain cotton tee. Maybe it felt amazing in the store but you're not sure if that softness survives twenty washes. In short: value for money bamboo viscose undershirts come down to fiber source,...