The Katerglass 10oz plastic half pint glass has a line at 250ml in addition to the 1/2 pint to rim writing (not quite visible in the photos).
What is the same as the old Katerglass is the premium disposable rigid feel, meaning that these plastic half pint glasses do not flex when customers are holding their beer or other drink with their to brim capacity of 285ml (10fl.oz). The reason they do not flex as much as traditional flexy half and pint glasses is because they are made from thicker polypropylene.
They are also ideal for busy licensed premises who require safety rather than real glass as they are CE certified. They are also perfect for busy events or even bar-b-q's at home where people would prefer to put straight into recycling rather than wash up. As they are Polypropylene they can be recycled at a wide number of outlets. As they are so sturdy, they can also be re-filled if the drinker wishes to keep the same glass as they are so sturdy, they aren't suitable for dish washing though.