Our XC+™ (Extreme Comfort+) collection gets even more extreme, designed with advanced details of comfort, performance, and durability you told us you value. A sleek, simple, plain-toe silhouette. Waterproof full-grain leather or nubuck upper with seam-sealed construction helps you weather the storm, from sidewalk puddles to soggy backyards. Leather lining. Contrast welt. XC FIT™ enhances comfort at key touchpoints of the tongue, heel, and arch. Light, contoured, removable XC FOAM® footbed delivers cushioned support that lasts and lasts. Ultralight, high-rebound XC FOAM® midsole for even more cushioning. Slip-resistant rubber sole.