Spent a long night dancing in heels and it took a while before I started to feel uncomfortable in them thanks to these inserts. They made a big difference. Thank you.Slides on easily and stays put.As expected, standard white school glue. works well on many craft surfaces but not super strong (not intended to be)Easy to useThey make the ball of my feet feel a hundred times better in heels. They don't move and stay put where you stick them.These are so comfortable inside my heels and keeps my foot from sliding.Item is of fantastic quality. Remarkably exceptional delivery. Splendid packaging. Recommended.It doesn't come with adhesive. I had to buy my own 2 side tape. Overall, my feet doesn't slip and the pad is comfy.Very disappointing that thy are not comfortable, I opened the box and can’t return them. Wasted money