An article of protective clothing comprising a durable laminate, characterised by being formed from the following layers, in order, i) a first flame resistant knitted fabric made from yarns, the fabric having an average fabric modulus of 0.078 newton (8 grams-force) or greater; ii) a flame-resistant nonwoven fabric having a machine direction and a cross direction, and consisting of a plurality of continuous filaments having a diameter of less than 1000 nm, the filaments in the fabric being substantially oriented parallel with the machine direction and having stretch and recovery in the cross direction; and iii) a second flame resistant knitted fabric made from yarns, the fabric having an average fabric modulus of 0.078 newton (8 grams-force) or greater; wherein the nonwoven fabric is positioned between and coextensive with the first and second flame-resistant knitted fabrics; the nonwoven fabric being attached to the first knitted fabric by a set of first attachment points, the attachment points defining a first unattached area having a first effective diameter; the nonwoven fabric also being attached to the second knitted fabric by a set of second attachment points, the attachment points defining a second unattached area having a second effective diameter; wherein both the first unattached area and the second unattached area each have a value A, in square centimeters, according to the formula: C < A < / = 14 * B + 100 the value B being the sum of the average fabric modulus of the first knitted fabric and the average fabric modulus of the second knitted fabric, in newton multiplied by 101.97 (in grams-force); and the value C being 5 square centimeters. i) a first flame resistant knitted fabric made from yarns, the fabric having an average fabric modulus of 0.078 newton (8 grams-force) or greater; ii) a flame-resistant nonwoven fabric having a machine direction and a cross direction, and consisting of a plurality of continuous filaments having a diameter of less than 1000 nm, the filaments in the fabric being substantially oriented parallel with the machine direction and having stretch and recovery in the cross direction; and iii) a second flame resistant knitted fabric made from yarns, the fabric having an average fabric modulus of 0.078 newton (8 grams-force) or greater; wherein the nonwoven fabric is positioned between and coextensive with the first and second flame-resistant knitted fabrics; the nonwoven fabric being attached to the first knitted fabric by a set of first attachment points, the attachment points defining a first unattached area having a first effective diameter; the nonwoven fabric also being attached to the second knitted fabric by a set of second attachment points, the attachment points defining a second unattached area having a second effective diameter; wherein both the first unattached area and the second unattached area each have a value A, in square centimeters, according to the formula: C < A < / = 14 * B + 100 the value B being the sum of the average fabric modulus of the first knitted fabric and the average fabric modulus of the second knitted fabric, in newton multiplied by 101.97 (in grams-force); and the value C being 5 square centimeters.