Technology: When a boot or shoe is Timberland guaranteed waterproof, it means that water cannot get in. Timberland uses premium waterproof leathers with waterproof properties that become part of the leather during the tanning process. The footwear also has either latex-sealed seams or an internal waterproof breathable membrane to help your feet stay dry when it's wet outside. Description: Here it is - our original, the boot that helped start it all over thirty years ago. Crafted in premium, full-grain leather and constructed to be sturdy and waterproof, our 6 Inch Premium Boots are rugged and dependable. We like to think of them as the role model for all of the other boots we make today.