Women's Altra Rivera 4 Width:B This helps create a more

This helps create a more responsive experience

The Supersonic has a totally different tongue with much more padding for a more comfortable ride

Thicker PU sockliner adds extra comfort or can be removed to accommodate orthotics

Thumb loop

we recommend the Adizero Adios Pro or the Adizero Takumi Sen

Women's Altra Rivera 4 Width:B This helps create a moreProviding a natural experience on any walk or run, the Altra Rivera 4 is a lightweight and versatile shoe for running or an active lifestyle that includes a variety of athletic activities. The Rivera 4 features a zero drop midsole, which positions the foot for a natural footstrike. Featuring Altras Slim Footshape, the Rivera 4 delivers a sleek and secure fit while allowing plenty of room for your toes to naturally splay. Embrace a natural feel for