When we started Undercover, we went to visit various bed linen producers in Portugal. Each supplier presented us with their fabric collections. We were shown lots of cotton options: high thread count, low thread count, sateen weaves and percale weaves. And a few flax linen and polyester-cotton options. I was already aware of cotton alternatives such as TENCEL™ and bamboo but it proved quite tricky to find a supplier who had experience working with these materials. Cotton is the textile industry’s gold standard, the material customers around the world inherently trust and feel safe with. Over the course of the…