Sertodo Copper C-SHK-30 Ice Tea Cup

Great cup

This cup is 100% copper and is not sealed so you receive the benefits of the copper. Because it is real, I did see dark spots on the cup after use called patina. It is a natural oxidation process that doesn't harm you that cleans up with lemon and salt.

This is the best copper cup I've ever purchased, the quality of the cup, is incredible, everytime you hold it in your hand it feels like no other. The only problem I have is that, it doesn't come in a larger size, I have to refill it multiple times at one setting

Beautiful glass. No sharp edges. Thick. Received at 8 pm. Cleaned out. Went to bed. 8 am oxidized at edge of water level and all around bottom. Cleaned out with salt and lime. But now what? I thought the whole point of having copper was to let it sit and drink clean copper. The internet says don’t drink out of an oxidized glass. Will make you sick. Sending it back and getting a new one. Looks like you can’t use tap water. That’s what turned my cup black. Filtered water did not. Get my second one. Put water in it at bed time. Drink a couple time during nite. In morning glass is black. Washed with half of lemon and salt. Looks like I’m gonna have to do that, every time I use.

Love this!! Trying to get away from plastic while I drink my daily water! Super happy with quality! A bit pricy, but worth it!