Premium limited edition stainless steel shaker cup just arrived the new phd limited edition stainless steel shaker strong and reliable shaker which can withstand prolonged usage a great alternative to your plastic shaker cup the phd limited edition stainless steel shaker is hard wearing and durable it delivers 25 fl oz 739ml has a tough flip open lid which helps prevent any leakages in your gym bag represent teamphd with this limited edition premium accessory the phd limited edition