Topo Athletic - Ultrafly 4. Color Navy/Black. Low Stock. On sale for $99.98. MSRP $135.00.. 4.1 out of 5 stars10 left in stockBrand NameTopo AthleticProduct NameUltrafly 4ColorNavy/BlackPrice$99.98MSRP: $135.00Rating4Rated 4 stars out of 5(65)