US Patent 6968573 Convertible ventilated trousers

An article of safety clothing is disclosed, and comprises a pair of trousers, of the type including a trunks part adapted to securely receive the lower region of the torso of a wearer in use and having apertures through which the legs of said wearer protrude in use; and a pair of tubular pant leg parts, each adapted to receive therethrough a respective protruding leg of said wearer in use and extending between an upper end, connected to said trunks part, and a lower end. The trunks part is substantially opaque, to conceal the pelvic region of said wearer in use, and each pant leg part includes a vent portion constructed from mesh.