Slate Rio Caza CrewA charcoal grey striped slubby cotton crewneck sweater knit with 100% organic cotton, garment dyed with natural dyes, and washed with biodegradable softeners. Organic Cotton Made with organic cotton and washed in an enzyme bath so the fabric is soft from first wear. Natural Dyes Natural dyes are pigments made from plants and minerals. We use natural dyes derived from rocks and soil.