. Under Armour Kids - Under Armour Kids Flash Slip On Sneaker (Big Kid). Color Castlerock/Steel/Phoenix Fire. $50.00. 3.5 out of 5 starsNew+2Brand NameUnder Armour KidsProduct NameUnder Armour Kids Flash Slip On Sneaker (Big Kid)ColorCastlerock/Steel/Phoenix FirePrice$50.00Rating4Rated 4 stars out of 5(2)