I have tried many, many items for ball of foot relief, and this is the only one that makes the cut. I wear 4 inch heels + everyday for work and have developed major issues with the part of the ball of foot that gets the most pressure. I could not step without major pain for a few weeks, even with the regular products from grocery store in shoes… then I tried the Spenco Ball of Foot Cushions, and I am wearing my shoes again, almost pain free. I have to replace every 3 to 4 weeks, but again I am in high heels and am not quite light, so that makes sense… I am sooo happy I found these!