Phd nutrition stainless steel shaker is a durable stylish shaker it can withstand a prolonged use perfect for on the gor the phd nutrition stainless steel shaker is a premium limited edition shaker cup it features a durable flip lip to help prevent any leaksr phd nutrition stainless steel shaker has a modern designed and has been made to hold up to 739ml it carries the popular phd branding and looks clean and stylishr phd nutrition stainless steel shaker ensures you enjoy your sports dri