This Nest Mug boasts a 80% recycled double-walled, vacuum-sealed stainless-steel body to keep your 10oz of hot stuff hot and your cold stuff cold. Thanks to a dual-thread design, the Nest Mug it integrates with other Nest components, including the Pour Over device, instantly making the Nest Mug an essential part of your gear quiver. They created a screw-on, splash proof lid allowing you to sip with ease.