These were a Christmas present for my son who is an amputee and uses crutches regularly. He ABSOLUTELY Loves how comfy they are and when placed over top of the standard foam rubber arm and hand pads provide EXCELLENT and much more comfortable additional padding. WE DID NOT experience the "slipping" that was mentioned in reviews I saw prior to this purchase. I would DEFINITELY recommend these, used as I said IN ADDITION to the standard foam rubber (even if it is old and worn) as it helps with cushioning and prevents slippage.