Ancol Adjustable Orange Squares Collar Ancol Adjustable Orange Squares Collar – A dazzling addition to the range. Add a splash of colour to your display with this colourful collar. Bright orange webbing and also a funky abstract square design. The Ancol collars are adjustable in all cases so that a fair degree of flexibility exists between the sizes. The adjustable uses of the collar means that for every dog there will be at least two collar sizes that will be acceptable and also of comfortable fit.