Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: works good but slips a lot

This is a good quality product. Its just that I didn't order the right size. Although it fits good on my right hand thumb but slips off my forefinger while counting pages. I work with med devices and while doing paperwork it stops one from using a wet foam, paste etc, or in cases of licking fingers, which can be very harmful, in places like nursing home and hospitals. This catches one page at a time for 99% of the time. A nice product indeed for people who have to do a lot of counting jobs. Just be sure to order the right size, as per the width of your finger ur going to use most.