Starbucks is rolling out a reusable plastic cup at its cafes.
The Seattle-based coffee chain already gives its US customers a dime discount each time they bring in reusable cups for refills.
Now it's hoping the new $1 cups - which bear its logo and resemble its white paper cups - will increase the habit.
As with other reusable cups, the new cups will be cleaned with boiling water each time customers bring them in, AP reported.
The cups were tested in 600 stores in the Pacific Northwest over the past few months and will be rolled out across the US and in Canada.
In 2008, Seattle-based Starbucks had said it wanted to serve 25pc of all drinks in reusable cups by 2015. That goal has since been reduced to 5pc.