High Quality Stainless Steel Material:
Gingprous 30 oz stainless steel tumblers made from unbreakable 304 18/8 food grade stainless steel, these insulated wine glasses are durable, lightweight, lead-free, non-breakable and easy to clean.

Double Wall Vacuum Insulation:
Gingprous 30 oz stainless steel tumblers wine glasses feature double-layer vacuum insulation technology, travel tumbler with double wall insulated design keeps your drinks cold for 9+ hours or hot for 5+ hours, always giving you the best temperature. So whether it's summer or winter, this double layer vacuum insulated wine glass will bring a better drinking experience to your daily life.

Multifunctional: