Innovative Tire Design - A Comprehensive Tire Design MethodThis method improves handling in wet or dry conditions and reduces irregular treadwear by combining an ideal tread design, casing, shape, materials and construcion.Innovative Roundness - Rounder is BetterRounder overall tire shape provides better balance for wet or dry handling.  Innovative Compound - Longer Is StrongerL.L. Carbon utilizes a special form of molecular re-engineered carbon black, a key factor in improving tire wear while enhancing wet performance. Tube Multicell compoundBetter grip on the ice. Winter tread compoundContinues to perform as a snow tire after 55% of tread with Tube Multicell compound is gone. Zig-zag sipes/spiral wrapAdds durability.