Overalls, Denim were a version of Battle Dress intended for working clothing, and were produced from khaki coloured cotton denim, with several manufacturer's variants. It was issued a size larger as it was intended to be worn over the regular uniform. Buttons were fixed through small holes in the denim material and kept in place by a split pin. The buttons could be easily removed for laundering which, due to denim overalls being workwear, was more frequent than for serge battledress. 90,000 sets of denim overalls were issued to the Local Defence Volunteers (later the Home Guard) as their main uniform, in the weeks following their establishment in May 1940. Three months later, supplies of overalls were so depleted that the standard serge Battledress began to be issued to the Home Guard instead and in December, it was announced that Battledress would fully replace Home Guard overalls as soon as supplies were available.