What type of rubber is used on the 8mm Vibram outsole? Is it natural?
The sole is an 8mm Vibram Sport Utility Moreflex which is a proprietary blend of EVA and rubber material. It is not made of 100% natural rubber but it is RoHS (Restriction of Hazardous Substances) compliant.
Is the Earth-Grip footbed on the 9mm Vibram outsole organic?
The footbed is dyed in small batches using GOTS certified organic dye in Los Angeles California. The fabric itself is not certified organic. The farmers in India who grow our cotton use traditional practices that have been in place for over 100 years--before non-organic fertilizers were introduced.
We laminate the Earth-Grip footbed to the Vibram® outsole using solvent free thermal adhesive.
What aspect of the 8mm Vibram outsole distinguishes its performance from the the 9mm Vibram outsole with Earth-Grip footbed?
The Elemental features no bedding allowing it to shed water and keep its lightweight properties in wet conditions.
Can the 9mm Vibram outsole with Earth-Grip footbed be worn in water?
Yes, all of our sandals can be worn in water. The Earth-Grip footbed resembles the feel of a mild bare earth equivalent--with superior all weather traction. The 100% cotton footbed will hold some water weight until it has a chance to dry. In comparison, our 8mm Vibram outsole dries much quicker by featuring no Earth-Grip footbed but the trade-off is less effective grip/performance in water.
Why is the 9mm Vibram outsole with Earth-Grip footbed more popular?
The Earth-Grip footbed provides a comfortable secure experience along with ideal light weight, proprioceptive feel and aggressive traction. These factors work in concert to make the 9mm outsole at home in the backcountry or around town.