I have used this woorkboot for delivering Fuel Oil, Diesel Fuel, Kerosene, and Gasoline all year long. It is an amazingly comfortable, durable, and mostly dry boot.  I say mostly because, I usually purchase them in the fall and by late spring to middle of summer, they start leaking.  The waterproofing does not last more than that.  I've tried additional exterior waterproofing, including KG's Bootguard (great stuff for those who scuff!), but the boots still leak in time.  I have had pairs that leaked earlier than 10 months and have taken them back for a refund/exchange. My feelings are that if I pay approx.$200 for a WATERPROOF boot, it should be waterproof for at least a year!  I only wish they'd stay waterproof longer!