ALTRA. AL0A4VQL445. RIVERA. NAVY. The Altra Rivera for men are neutral all-round running shoes. The Rivera is a completely new model by Altra. These lightweight running shoes are ideal for your daily runs on an average as well as a faster pace. The mesh upper fits snugly around the feet. Thanks to the structure added to the upper you ll experience targeted support and stability at the midfoot. Altra is known for providing a roomy toe-box. The Rivera also provides a lot of room to the toes allowing them to move around freely.