Shoe Heel Slip Prevention & Blister Prevention Pads - 10 Pairs. I'm selling the extras from a bulk purchase of heel pads to prevent shoes from slipping off while walking (the original purchase price was over 1,000 yen). These can also be used to adjust the size of shoes that are too big. These are new and unused, but some have been opened and the packaging has been discarded. Please understand that these are pre-owned items, as they have been handled by someone else. Please note that the items will be shipped in simple packaging to keep shipping costs down. Please also read my profile.