Slim-fit T-shirt in light cotton jersey, featuring a rubberised and water-print graphic on the front. Diesel is a member of the Better Cotton Initiative. BCI connects people and organisations throughout the cotton sector, from field to store, to promote measurable and continuing improvements for the environment, farming communities and the economies of cotton-producing areas. By buying cotton products from Diesel, you’re supporting more responsible cotton production. Better Cotton is sourced via a system of mass balance and is not physically traceable to end products.