Wonderful buy, I was looking for something like that for a long time. The page is comfortable and clear to use, delivery super fast and the products really work for me! What was unexpected - they really help me focus, I sometimes work with long texts and it's difficult without rest, but if I have GFUEL near me I usually complete the work in one go while drinking it. The only negative aspect for me is the price of delivery, as it costs more than one tube of product for me, which is a pitty, but well... I try to order more in one go and still make it worth it.