Review on 🥤 FineDine Premium Grade Stainless Steel Pint Cups Water Tumblers: Unbreakable, Stackable, Brushed Metal Drinking Glasses (5 Piece Set) for Travel, Outdoor, Camping, Everyday Use - 16 Oz Capacity by Paul Rose

I was hoping to replace all our mugs with these as we are now fully renovated but the lack of insulation defeats the purpose of these mugs. You sweat profusely and the ice melts as quickly as in ordinary cups. I asked the seller if they can be washed in the dishwasher and they told me yes, but after a few cycles in the dishwasher they start to turn a brownish-rusty color on the bottom in the cup. I've had guests tell me my cup is dirty which just makes me look like a bad hostess.