The Vibram FiveFingers Spidrwalk is built for the in-between terrain that trips up conventional footwear: creek crossings, canyon scrambles, and coastal rock-hopping where the ground is wet, uneven, and constantly changing. The five-toe platform keeps each toe in contact with the surface independently, so our feet read and respond to shifting ground rather than riding over it as a single unit. What Our Gearhead(R) Experts Are Saying:"The 3. 7mm MegaGrip outsole grips wet rock the way a thicker sole can't. I feel the surface through the shoe, which is what keeps my footing secure on a slippery riverbed."