RYKA Women's Sport Walker Advance Shoe 100% Manmade Rubber sole Fit: This style tends to run small. For an accurate fit we recommend purchasing a 1/2 size larger than you typically purchase. For example, if you normally purchase a size 7, we recommend purchasing a size 7 1/2. Insole: EVA Outsole: Rubber Upper: Leather/Air Mesh/High Density Foam Features of this item include: OrthoLite&reg;, Walking