To add further functionalities and/or design elements to flame retardant Trevira CS textiles, the brand Trevira CS flex offers possibilities for certain options in terms of how materials can be combined. It goes without saying that safety is our highest priority and can never be compromised. This means that the Trevira CS brand will only ever be awarded to textiles that pass the Trevira CS burn test. This is why, the textile fabric must compromise at least 75% flame retardant fibers and yarns by Trevira and/or our partners in yarn processing. The remaining 25% can be made up of other flame retardant specialties by Trevira or approved partners, including 5% non-Trevira materials such as fancy yarns. However, non-Trevira flame retardant fibers and yarns may only be used if they cannot be obtained from Trevira.