Dr. Martens Kid's Collection - MJ Bex (Big Kid). Color Black. On sale for $79.99. MSRP $90.00.. 5.0 out of 5 starsBrand NameDr. Martens Kid's CollectionProduct NameMJ Bex (Big Kid)ColorBlackPrice$79.99MSRP: $90.00Rating5Rated 5 stars out of 5(1)