Mid Heel Boots are any styling of boot with a mid range heel height measurement. In general, Mid Heel Boots will have a heel height from around 1 5/8 inches to 2 1/2 inches
About Zipper:
A zipper, sometimes called a 'slide fastener' is a device consisting of two toothed tracks or spiral metal or plastic coils, each bordering one of two edges to be joined, and a piece that either interlocks or separates them when pulled.