Pint glass small pits which aid in nucleation, allowing the gas within it to be released more easily, thus preserving the head. Without the aid of these pits a regular pint glass will keep a head for only 3 or 4 minutes before appearing 'flat'. The markings come in a variety of styles ranging from a simple circular or square hatched pattern to more complicated branding messages. Pint glass collecting is an increasingly popular way for individuals to commemorate their visits to popular tourist destinations, most notably to microbreweries or sports arenas. These destinations often sell pint glasses adorned with their logos,
Beer in Australia the "schooner" of 285 ml, (an "imperial half pint"), and the "pint" of 425 ml. "Imperial pints" are also increasingly popular. Also increasingly popular inside pubs and restaurants is the sale of "premium" and non-locally brewed beer in bottles in the size range 300 ml to 375 ml. Headmasters is one of the most common glass manufacturers, at least for the schooner size. Many pubs in Sydney and Melbourne particularly, offer Guinness style and/or conical pint glasses along with tankard glass and British dimpled glass pint mugs. Larger serving measurements have become increasingly popular. Jugs, 1 fluid litre Maß in