Hey there ladies, I just recently purchased a pair of Lanvins. SA at Barney's recommended that I put 'zipsoles' on the bottom of the flat boots. She said any shoe repair place would have it. I live in Canada and no shoe repair place seems to know what it is. Is it something that you have to get professionally done or something that you buy and stick on? Does it go on just the heel of the shoe or the whole bottom of the shoe? I'm also planning on purchasing the lanvin flats in patent..do they scrape the back of your heel? Thanks!