altra women's olympus 3 (10 b us) black altra <p>the olympus 3.0 is completely updated. the midsole is more flexible and responsive now, thanks to the addition of innerflex, and the outsole has been widened in the heel area and center groove for increased stability and traction.</p> <p><strong>vibram<br/></strong>- high performance sticky rubber compound featuring unparalleled grip on wet and dry surfaces for optimal ground adaptability.</p> <p><strong>trailclaw</strong><br/>- canted lugs positioned strategically beneath the metatarsals to provide traction at toe off.</p> <p><strong>gaiter trap</strong><br/>- an innovative hook-and-loop tab that secures your gaiters to your gaiters to your trail shoes to keep dirt and debris out.</p>