Updated with our new ADV WindSkin and super stretch Nylon II materials, this is the nicest farmer john you will find. When combined with a drytop, spraytop, or one of our ExoSkin or NeoSkin tops, the Sport John gives incredible versatility. Made of 3mm ADV WindSkin and super stretch Nylon II panels in the seat, and saddle. The knees are reinforced, and all openings are finished with a Lycra binding tape. For ease of entry, we have included a front zipper and our new Velcro ankle closures.