Patent ID: 8302330

Claim:
A slipper product line comprising at least nine models of slippers, with at least three different sizes and at least three levels of firmness, each of said slippers comprising a sole portion, an upper portion attached to the sole portion and configured for retaining the slipper on a wearer's foot, and a support portion located within the sole portion, wherein: the models of slippers within the product line differ only in size and level of firmness of the support portion; each model of slipper within the product line is classified into one of the three levels of firmness based on the firmness of the support portion and one of the three sizes; each slipper is labeled with visual indicia that corresponds to the level of firmness of the support portion; and the at least three levels of firmness comprise soft, medium and firm corresponding to a Shore 0 scale such that a slipper classified as soft comprises a support portion having a firmness of about 0 to 6 on the scale, a slipper classified as medium comprises a support portion having a firmness of about 6 to 10 on the scale, and slipper classified as firm comprises a support portion having a firmness greater than 10 on the scale.