Flame-resistant boiler suit with double button placket and concealed zipper at the front. Adjustable cuffs with Velcro closure. Back pleats for improved comfort. Elasticated waist. Two cross pockets which also have ingresses. Back pocket with flap. Ruler pocket with flap. Thigh pocket with inside strap with D-ring for attaching e.g. an ID card. The thigh pocket has a box effect for extra spaciousness, and a loose bottom for greater freedom of movement. Ergonomically shaped knees. Knee reinforcement/knee pockets with Velcro bottom closure. Well thought-out design details on pockets and pleats prevent embers from settling on the fabric.