The Wolverine I-90 EPX Boa 6" is a CarbonMax Composite round toe safety work boot with the unique Boa lacing system. Premium Waterproof Coffee Bean color Full grain leather with a Waterproof Plus breathable membrane with moisture wicking mesh. The footbed is removable EPX ® Anti Fatigue. The midsole is Advanced Comfort PU (polyurethane), and the outsole is the High-Abrasion TPU SR (slip resistant) Lug. Direct attach construction with a nylon shank. ASTM F2413-18 M I/75 C/75 EH Rating.