97% cotton, 3% elastane. Light, elastic canvas, perfect, comfortable fit thanks to elasthane and an ergonomic cut, triple stitched seam, elastic waistband with belt loops, bib with adjustable, elasticated braces, pockets, several tool pockets, ruler pocket, pen holders and mobile phone pocket, spacious zipped pocket on the inside of bib, reflective elements at the front and back, washable at 60°C, suited for tumble drying, buttons and zips:In order to avoid the product in handbeing damaged, all the buttons and zips are concealed.