Choosing your favourite fabric can be hard and that's why we're here to help. Fatboy uses natural and synthetic fabrics. The natural fabrics are made of 100% natural yarns, like the stonewashed cotton collection. Generally, natural fabrics are not made for outdoor use as they are sensitive to UV radiation, (salty or chlorinated) water, and bleach. Top-quality outdoor materials must be stainproof, waterproof, and UV and mould-resistant. That's why our outdoor products are produced from materials made of 100% synthetic yarns and fibers like olefin fabrics. All these materials are weatherproof and can be used outdoors all year round.