. Madewell - Northside Vintage Muscle Tank. Color Faded Seagrass. On sale for $15.67. MSRP $16.50.. 4.0 out of 5 stars25th ExclusiveAdd to favorites. 0 people have favorited this+2Brand NameMadewellProduct NameNorthside Vintage Muscle TankGenderWomen'sColorFaded SeagrassPrice$15.67MSRP: $16.50Rating4Rated 4 stars out of 5(8)