I purchased this set with the knowledge that copper is antibacterial material and I want to start consuming my daily water intake from this purified-like water.
I used these for half a year or so and despite of regular cleaning as per Peak Life Store's instructions that came with the package, the green layer just kept growing. I kept using it as I thought this is ok, but I stopped using it when drinking water from the bottle nearly made me throw up, no kidding. The weird mouldy disgusting taste, I don't wish anyone ever experience. I do understand that the formation of this green layer is natural and it can be cleaned but the worst thing is that the bottles I received could never be cleaned entirely. I put them aside and wrote to Peak Life Store for a refund as this is surely not as it should work with the regular, meticulous cleaning I've done as per instructions. After couple of messages via whatsapp (that's what they said as means of contact in their package), they said they will ship a new set to my address and said they don't want back these ones. They told me they will provide me with a tracking number and when I asked for it, they stopped responding. After two months of waiting and weekly text to the phone number that is shown here on the website, I gave up.
I truly hope you will think twice before ordering and dealing with this non-existent customer service for such an expensive set of bottles.
Also, we aware that these are hand-made. This means they can leak and also, one of my bottles neck thread is so off that it takes a bit of play to put the lid on it, and this is like that since new.
Oh, and another one, before I ordered the bottle I tried to enter the discount code, however, I had to contact them about it and they said they "activated" it so I could order it with the code. Man....they do have customer service when you bring money in, but when they would have to stand behind their product, they ghost you, guaranteed.