Skechers for Work Men's Flex Advantage Slip Resistant Mcallen Slip On 100% Synthetic Imported Synthetic sole Slip-on shoe work shoe featuring mesh fabric upper and slip-resistant traction outsole Elastic side gores at opening Padded collar and reinforced stitched seams. Memory foam insole for cushioning For medium fit it maintains medium width in the heel with a roomier toe box. For medium fit it is a bit more open interior offers a looser fit around the entire foot Soft fabric shoe lining. 1 1/4 inch built in heel