The Snow Peak Stainless Steel Double Wall Cup A double wall, 11.2 fluid oz., stainless steel with an ergonomic handle weighing in at 7.5 oz. It's super fancy, so it will make all your fellow coffee drinkers jealous. Good for camping and everyday use. The Stainless Steel Cup's double walls have high heat retention properties, so your morning coffee stays hot longer. At the lip, both of the walls are welded together to make the edges thicker and smoother than a single wall cup. Because of its steel construction, the Snow Peak Stainless Steel Double Wall Cup is far more durable than it's titanium counterpart. So while you may not shave off ounces, you'll get a more sturdy mug.