Can Sublimatation products go in the dishwasher?
The answer is NO.
If you look it up on the internet, as I did in the beginning, you will find that it says you can...So I did. Then I started noticing the color changing and it wasn't as brilliant... it was getting dull and faded out. So then I kept putting 2 of my tumblers in there just as an example to take to my craft fairs and show people.
It's also been suggested not soaking them in a sink of water. This would be because the hot water can dull the design just like a dishwasher can. I also wash my cups first, before greasy pans, silverware, etc. just to be safe. I've noticed that items like silverware can chip the design.
Remember, they are hand made and need a little extra care.
Do the lids on the tumblers last forever?
I sure wish they did but No, they do not.
The lids are plastic and with the motion of opening and closing they eventually get worn out.
Here's the good news - they can easily be purchased from Amazon in packages of 3 to 5 from $5.95 to 10.99 (specific details can change). Just look up "20oz Skinny Tumbler Lid" and pick which option works best for you. Personally, I use the lids that the sliding part broke off on as lids for my tumbler when I have my cold drinks in them and a straw (metal or plastic, your choice).
*TIP: a friend of mine (Thanks Septembre!) told me if you soak the lids in a cup with a denture cleaning tablet (get the cheap ones at the Dollar Store) and it gets the coffee stains out much easier. Then just rinse and they are clean!