Requisite union jack headcollar the requisite union jack headcollar is a great quality nylon webbing headcollar thats fully adjustable at the nose and head its made from a high quality nylon webbing and features union jack design on the nose brass coloured metal fittings give the headcollar a smart finish and the trigger clip fastening on the throat makes it easy to put on and remove the headcollar the requisite union jack headcollar has been designed with practicality and comfort i