The Retulp Urban drinking bottle is completely plastic-free and has a steel cap. Water from a stainless steel bottle tastes better because there is no transfer of flavor between the water and stainless steel. But the beautiful design of this bottle is also there, The Retulp stainless steel water lesson is a useful asset at your workplace so that you stay hydrated throughout the day. The cap has a hook so you can easily attach the water bottle.