Snow Peak Titanium Double Wall 450 Mug Double-wall Titanium construction allows insulation to keep your drink warm longer and your hands from getting burned Corrosion-resistant titanium is extremely lightweight and it leaves no metallic smell or taste Handles folds away for compact storage in included mesh storage sack with drawstring closure Titanium sets a new standard for lightweight kitchenware, weighing only half as much as stainless-steel Double-wall construction is not suitable for cooking; do not place on an open flame or hot burner