Net is also used in medical practices to provide fabric insulation and wrapping under an industry standard sling. In the medical practice, netting provides cushion and protection, when used in layers, but still allows the skin to breathe under the fabric. Depending on what the netting is being used for, a different wax or plastic coating can be applied in order to cover the filaments that use up the yarn. Filaments can be made from synthetic or natural fibres, but that is all up to the manufacturer when deciphering what the textiles future entails. When netting is going to be exposed to water or heat often, manufacturers consider that and apply what best fits that textile.