A new softer PWRRUN gives you more cushion with less weight for your softest run yetNew HOLLOW-TECH guides your stride without added bulkNew midsole geometry is shaped for a super smooth ride from heel-to-toeMore flexibility in the forefoot allows your foot to move more fluidlyMore underfoot contouring lets you sit deeper into the footbed, and allows the shoe to hug your foot for an incredibly plush and supportive feel, top to bottomEnjoy an extra layer of comfort closer to your foot with a PWRRUN+ cushioned socklinerFORMFIT design addresses every point of contact with your foot, going well beyond lacing to ensure a personalized fit and feel, top to bottomLightweight, breathable mesh with minimized layers for a sleek fitIncreased durability with more rubber where you need it