You'd even be reimbursed the cost of shipping the boots back. We're not going to give anybody a hard time. Sharing the burden. Not every company that offers a lifetime guarantee is quite as generous. Le Creuset's 101-year warranty calls for the consumer to pick up shipping charges for returning problem pots, and this is not lightweight cookware.
Most folks are honest.
As are, presumably, most companies that offer lifetime warranties. While not lifetime guarantees, extra-cost extended warranties, available on many products at the point of purchase, may make sense for some people. If you never want to have to worry about your VCR, it's a kind of insurance. A portable CD player owned by a teenager may be a candidate for a contract. Good for 101 years.