The REV 75 is built for economy and light weight, with a carbon-reinforced foam-core construction and a tight, turny sidecut. It's sold only as a system, with an 11-DIN Head PR plate/binding. The REV series is a broad collection of frontside-oriented all-mountain skis ranging in width from 105 mm down to 70 mm. The signature technology throughout the series is Head's ERA 3.0 design philosophy. The "3.0" refers to the fundamental triad of radius (ie. sidecut), rebound (ie. flex), and rocker. Head designs all ERA skis so that these three fundamentals work in harmony, specifically adding more width at the tip so that the introduction of tip rocker doesn't compromise turn initiation. Head's Allride Rocker combines 80-percent camber for edge and rebound with 20 percent tip rocker for soft-snow flotation and shock absorption. Higher-end models in the family (80 mm and up) feature Head's Sandwich Cap Construction (wood-core laminate layup with shortened vertical sidewalls, for edge grip, topped by rounded cap-construction shoulders, for a touch of forgiveness). The fatter REV models are sold flat; narrower ones are sold as systems (with binding).