STANLEY ADVENTURE VACUUM SWITCHBACK MUG 0.35 l, steel 18/8, polar white, vacuum insulation, drinking cup, finger loop The one-handed drinking cup ADVENTURE VACUUM SWITCHBACK MUG 354 ML from STANLEY in stainless steel with a polar white finish is a must-have for on the go. Thanks to the vacuum between the rustproof 18/8 stainless steel walls, drinks stay hot for 5 hours in the leak-proof mug. The Switchback Mug has a further improved closure: very easy to use with one hand and easy to clean at the same time (the lid, which can be easily separated into two parts, is dishwasher-safe like the drinking cup). The lid also has a dust cover. The beautifully designed mug has a practical, rubberized finger loop that can also be used to hang it up outdoors. With a diameter of 7.2 cm, the Switchback.