Otherwise, the two sport similar features, including: a second skin lining, ECCO's Comfort Fiber system and a Q-Lok spike locking system.
The Comfort Classic's second skin lining is meant to provide optimal comfort as it holds the wearer's foot more snugly in place while still offering superior breathability. Its Comfort Fiber system allows the Comfort Classic to better keep the wearer's feet cool and dry by way of a moisture-absorbent foam. Meanwhile, the Comfort Classic's Q-Lok spike receptacle provides a quick and simple method of locking in spikes, requiring only a quarter turn and a snap.