The New Balance 870v3 features N-FUSE technology, a dual-construction midsole which is one part soft top layer for cushioning and a harder compressed layer for stability and support. The soft layer is made from Rev-Lite, a lighter constructed midsole which makes you faster but which has the same level of compression set as traditional heavier EVA's. The 870v3 also feature the REVlite midsole, which is 30% lighter than traditional EVA compounds, yet manages to offer the same level of compression set, giving you a lighter shoe but still with the same great cushioning underfoot. Abzorb heel rubber helps to disperse shock and impact stress, reducing the likelihood of injuries and soreness. Made with a redesigned open mesh breathable synthetic upper to help improve comfort and breathability, welded seams also help to enhance upper support, whilst keeping weight to a minimum. Pronation support is also offered in the form of a medial post which will help prevent rolling.