One of the best lubes available on the market, no complaints to it. Plus YYJ nostalgia. A bottle will last you an entire lifetime, I just had to rebuy since I lost the bottle I bought from YYE around 2010.

My package did arrive with some slight leakage with letter completely missing but I assume that's what the plastic bag is for. Easy to clean up, no noticeable loss in any lube either.

Pin prick drop into my YYR DS bearings. Stays unresponsive, doesn't affect spin time too much, and quiets the bearing down slightly.

I still have the YoyoJam lube I bought in 2013 (thick and thin) and it is has done me very well. It is smooth and breaks in quickly and has never caused gunky buildup in any of my bearings. I have never had any issue with it leaking in the packaging, but if you did (like the person in the other review), I highly suggest contacting YoyoExpert and letting them know. Their customer service is on point and I am beyond assured that they would happily rectify the situation. This is a company that cares and puts out wonderful products. This lube will not disappoint and will lengthen the lives of your bearings.

when i got it had leaked inside the bagie and it was super messy, as well as the letters where coming off the bottle. i would recommend yoyo factory lube