I am using the Marigold Industrial G17K Black Heavyweight gloves and have found them quite rugged and possibly more resistant to zebra mussels that the blue Showa PVC gloves although those guys will eventually cut anything.The marigold/orange gloves are great for dexterity, but not as durable as the blue gloves. Zebra mussels are an issue here diving wrecks and they apparently shred the orange gloves easily. I've used the marigold in the past, just at the quarry.