VIBRAMA(R) XS TREK(TM) - Designed for use on all terrain including wet slick terrain. Traction: Sticky rubber with a deep, wide lug pattern for cutting through algae and gripping terrain. Ideal for use on land, in boats, and in less demanding wet wading conditions. Fit: Match the sole size with your OmniTraxA(R) 3.0 boot for a perfect fit.