Caddis Waterfowl Wading Systems Durastretch Neoprene MAX-5 Wader - WFW21902W Stout. 5mm DuraStretch Neoprene. The 600-gram Thinsulate Insulation in the boots will keep your feet warm all season. You can trust the 0.5" of wool felt in the foot bottom for insulation and cushioning.
eBay