I am very happy with my loupes. They are really well made and don’t feel heavy. I decided to go for 5x magnication and in the beginning,I was a bit worried that I might find it difficult to adjust to them due to the high magnification but they felt really comfortable and I got used to them within a week . The focus was sharp and clear from the very first time I used them and I didn’t have to send them back for any additional adjustments. I feel Priyam was really thorough with his measurements ( he took a lottt of measurements). I was able to call him and text him with regards to any queries I had and he was really prompt in getting back to me. I am particularly happy with this brand’s service as I feel they really care about the needs of their clients. I even got a text from them, after 6 weeks , asking if everything was ok and if I was happy. I would definitely recommend these loupes.