Under Armour Kids - Grade School Flash (Big Kid). Color Castlerock/Steel/Phoenix Fire. On sale for $44.21. MSRP $50.00.. 4.7 out of 5 stars+4Brand NameUnder Armour KidsProduct NameGrade School Flash (Big Kid)ColorCastlerock/Steel/Phoenix FirePrice$44.21MSRP: $50.00Rating5Rated 5 stars out of 5(10)