Tretorn Boat Shoes. New this season in rich leather, the Smögensson men's shoe updates the classic boat shoe with Tretorn's unique slip on construction.Tumbled leather upper with suede overlays. Apron stitch details. Leather lace. Slip on construction with cross-over elastic gore straps to ensure a secure fit. Leather collar and tongue, textile lining. Textile sockliner, 100% post industrial mesh. EcoOrthoLite® insole. Rubber midsole. Rubber outsole.