Amber mugs and tumblers are made from glass; product descriptions list glass construction for both the stackable mugs and the ribbed tumblers.
Heights shown range from about 3.5 inches for the shorter mugs/tumblers up to about 6.26 inches for the tall tumbler.
Stackable amber mugs are highlighted for everyday hot drinks like espresso or cappuccino, while ribbed amber tumblers are shown for serving cold beverages and entertaining guests.
One description lists eight color options—Pink Blush, Marine Blue, Sapphire Blue, Sepia, Green, Grey, Amber, and Plum—and the tumblers are described as having a ribbed texture finish.