All-mountain riding ladies love riding on the Northwave Opal. The Super Lace Lacing System has upper and lower zones that provide you with a snug and secure fit that can easily be tweak for additional comfort and performance. Northwave's TF2 Liner has an anatomically correct shape that is reinforced with memory foam that can be thermoformed for a custom fit. The 540 Degree Heel Retention System keeps your heels locked down while providing extra energy transfer in the ankle.