The Wolverine I-90 EPX brown round toe Romeo slip on has a CarbonMax composite toe with premium waterproof full grain leather. It has a breathable Waterproof Plus membrane with moisture wicking mesh. It has a removable EPX Anti-Fatigue footbed. The midsole is advanced comfort PU with a High-Abrasion TPU SR Lug. Direct attach construction with a nylon shank. Rating: ASTM F2413-18 M I/75 C/75 EH. Oil, water, abrasion, chemical, and slip resistant. 30 Day Comfort Guarantee.