Boots Material Guide

LEATHER

HEINEN TERRACARE FULL GRAIN LEATHER: Full grain leather uses the best parts of the hide. 

HEINEN TERRACARE NUBUCK LEATHER: Nubuck is a full grain leather that has been gently brushed to give the surface a different character.The Nubuck surface breathes better and is easier to re-impregnate. The leather is impregnated directly at the tannery and no fluorocarbons are used in the process, which takes place in a closed system. Thicknesses of 2.0–2.2mm.

Lundhags Heinen Terracare leather is CO2 neutral since 2019.
https://www.heinen-leather.de/
https://www.terra-care.de/en/

PERWANGER® SUEDE LEATHER: A finer suede leather from cow that is robust, has excellent breathability, is water repellent and hardwearing. Thicknesses of 1.8–2.0mm.

Leather Leaders since 1780 http://www.perwangerleather.com/

CORRADI SUEDE LEATHER: Made in Italy, from the northern European cow hides.

CELLULAR RUBBER

CERTECH® EXP: Certech® Exp is Lundhags own shell construction for the lower parts of the boots. A technology built-up in 3-layers. The outer layer is the durable, but light material Liba Smart, the midlayer uses Eva for insulation and shock absorption, and the inner layer is micro fiber, which lines the entire inner for best comfort. Together, the layers in Certech® Exp create a light and durable protection against everything that a pair of boots can be exposed to.

CERTECH®: Cellular Rubber Technology is the manufacturing technology behind Lundhags cellular rubber bottom. Cellular rubber is a yeast rubber with numerous micro air bubbles that provide a light and flexible waterproof material. To describe the differences in rubber, each version is numbered 2.0–5.0, with the highest number representing a more stable and insulating design. The same construction is available in both Regular and Opti lasts. The Ws versions have slightly softer soles and thinner insulation for a more customized flex.

OUTSOLES

LUNDHAGS WAYFINDER: Our own development year 2020, a classical rough patterned outsole with a medium soft rubber compound that provides grip and durability.

VIBRAM® TRACTION: Our outsoles are made of Vibram®, built with EVA to provide cushioning and a rolling step. The traction pattern is exclusive for Lundhags’ boots. Available in Megagript compound for grip and durability.

VIBRAM® CURCUMA: Self cleaning track pattern outsole with Tront rubber compound and toe protection. 25% lighter thanks to faceted mould.

VIBRAM® MOTTARONE – Arctic grip: Vibram Mottarone is our winter outsole. Our grip lugs use an innovative technology called Arctic grip, which is specifically engineered to perform on ice, giving you excellent traction in winter conditions. The toe has a protective bumper and the heel is undercut to improve downhill braking. The self cleaning rubber bottom has a great mix lightweight and durability and is made from an Icetrek rubber compound, providing excellent performance in very low temperatures.
https://eu.vibram.com/

RUBBERMAC DEFENDER: The Defender outsole by Rubbermac is a hiking outsole with excellent grip and integrated toe protection. It is built on a shock absorbing EVA midsole and a 60 ShA rubber compound which makes the outsole good for all year conditions.

OTHER MATERIALS

ARIAPRENE: Ariaprene is a high performance synthetic rubber material. It is light, elastic, and closed-celled, meaning that our products gather less water and dry quicker. Ariaprene is also used for its insulating and shock absorbing properties, and it is free from harmful chemicals.

LIBA SMART: Liba Smart is made of Expanded TPU (thermoplastic polyuretan). A material which out performs rubber in most tests. A light, hard wearing protection that is waterproof, flexible and 100% recyclable. Liba Smart is UV- and ozone-resistant.

INSOLE (internal part, not the removable footbed): The insole is built from a 3mm fiber material and has a built-in steel shank. Our strongest models use Texon T70, a fiber material with a polymer core for stability and torsional rigidity.

EVA ISOLATION: An extra layer of EVA with a hardness of 35 ShA is used to improve cushioning and resistance to the cold. The thickness together with the insole effects the flex of the boot. Thickness of 4 or 6mm.

MICROFIBER: Polyurethane/Polyamide microfibers provide a light, flexible material with great durability. It is used as a lining material in both Certech® constructions and 3-layer shafts in the most exposed places. Thickness 1.0mm or 1.4mm.

TPU TOECAP: The developed TPU toecap forms a strong attachment of the sole to the shoe by distributing forces over a larger area. The TPU toecap also protects against wear and extends the life of the shoe.

HEEL FIT CONTROL (HFC): An extra cushion that covers the seam between the bottom and shaft to provide an improved heel grip and stability.

RINGS AND HOOKS: Our rings/hooks and rivets are manufactured from iron or copper/iron alloys for maximum resistance. We use a nickel-free, high resistance treatment to provide additional protection against corrosion.

FELT: The felt in the foot beds and inner boot consists of 70% Wool and 30% Polyester. Thickness of 3 or 5mm.

AEROGEL: Aerogel is an innovative insulation material that we use inside our warmest shell boot, the Skare Expedition. Millions of air pockets form a thermal blockade, locking out the cold and keeping the warmth inside, thus making it a fantastic insulator. PrimaLoft® Gold Insulation Aerogel retains an average of 96 percent of its thermal performance with applied pressure from active feet, which is perfect for our insoles.