Traction: Same sole as Vibram XS Trek with 36 carbide-tipped studs per pair. Sticky rubber with a deep, wide lug pattern for cutting through snow and gripping terrain. Great flexibility and wet traction. Fit: Match the sole size with your OmniTrax 3.0 boot for a perfect fit. Rock Solid Guarantee: This product is backed by Korkers Rock Solid guarantee of one year, if anything happens reach out and we'll make it right.