Altra - Men's Rivera 4. Color Black. Low Stock. On sale for $97.50. MSRP $130.00.. 3.3 out of 5 stars6 left in stock+2Brand NameAltraProduct NameMen's Rivera 4GenderMen'sColorBlackPrice$97.50MSRP: $130.00Rating3Rated 3 stars out of 5(16)