Ventus7 Technology:optimum regulation of warm and humidity, the ergonomic cut is designed to maximise freedom of movement.Poly jersey super stretch.Composition:Fabric:77% Polyamide, 23% Elastane.Elastic Under Bust:52% Polyamide, 36% Polyester, 12% Elastane.Shoulder Elastic:41% Polyester, 39% Polyamide, 20% Rubber.Main Lining:95% Polyester, 5% Elastane.Secondary Lining:77% Polyamide, 23% Elastane.