The term waterproof is used on a huge range of products, but what does it mean when it comes to DEWALT? It is not just one element that makes a boot waterproof, but several complementing techniques and technologies that create a water tight, comfortable, and functional product to stay tough throughout the day:
A selection of quality leathers are used in the crafting of our waterproof boots, whether Nubuck or Buffalo, Crazy Horse or Full Grain, the choice of material is the first key step in creating a 100% waterproof boot.
Outsole & Midsole
When designing any boot a critical area to consider is the sole, the only part of the product to touch the ground you walk on. This is no different when creating waterproof boots, and is indeed a major part of the overall waterproof function. DEWALT uses an injected TPU construction for the outsole, and a PU material for the midsole. The choice of TPU for the outsole construction means the boot has a higher heat threshold, and also provides better wear resistance when compared to traditional rubber outsoles. The injection mould design of the outsole is also key, as this provides a better seal between the leather and the outsole than a traditional cemented construction.
For the midsole we opt for a dual density PU material. This can include either a steel plate, or composite protection to avoid any intrusions from foreign objects around the jobsite. The steel plate is a more traditional offering, providing strong protection. The more modern composite material is more flexible and lighter, while still offering the same protection as the steel plate.
The meat of the sandwich. A membrane ensures that the outer of the boot remains waterproof, and allows the lining to remain breathable and pull moisture away from the foot. We use several technology partners, but one of the key partners we use is HydroGuard. HydroGuard is a registered trademark of Starensier/Cosmo. It is a Polyurethane Membrane which can be laminated to basically any textile. the membrane is watertight and very stretchable, thus particularly suitable for use in footwear and apparel.
HydroGuard waterproof-breathable membranes are covered in billions of microscopic pores, giving the laminate its unique waterproof-breathable properties. Water droplets are too large to pass through the membrane, keeping you dry, but the pores are the perfect size to let small water vapor molecules (sweat and body moisture) escape rather than building up inside of your boot.
Footbed and Lining
The final piece of the puzzle is in some ways the most important. There are many ways to make an item waterproof, but if the end product is uncomfortable then it becomes unsuitable for lots of consumers. Our core PU footbeds have a wicking technology included in the design. This pulls moisture away from the foot, and draws it out through the opening at the top of the boot. The PU construction allows for better rebound properties, to provide comfort and support to the wearer, and holds those properties for a longer time.
We also offer an improved design in parts of our footwear range that we term as Pro Comfort. This footbed is constructed from a lighter weight PU material, with a layer of 3D Memory Foam on top to provide enhanced comfort. The material additionally contains anti-bacterial properties, which allow the boots to retain that 'new boot' feeling for longer.