The upper with Cordura Mud Guard has a high breathability and protects against external dirt. The Monoloop mesh material is combined with the 3D Fit Print upper. As a result, the shoes have a high breathability and they also dry faster. This version has a TPU nose cap and mudguard, which provide extra protection and durability at the top. In addition, the lace protector keeps the laces in place. The midsole of the Brooks Cascadia 17 features DNA LOFT v2, making the shoe lighter and more cushioning than its predecessor. 2 mm foam has also been added to the midsole, which provides extra comfort. The midsole has more release grooves which provides improved adaptability on rough terrain. The Ballistic Rock Shield now contains vertical grooves, making it easier for you to move sideways. The outsole of the shoes features the Trail Adapt System, which uses an integrated midsole, rock plate, and outsole system for stability on any terrain. The TrailTrack rubber in the outsole gives you optimal grip on both dry and wet terrain. The drainage ports allow water to escape quickly and Gusset keeps out sand and small debris.