Under Armour Kids - Grade School Infinity 3.0 (Big Kid). Color Black/Vivid Magenta/Morph Green. On sale for $58.50. MSRP $65.00.. +4Brand NameUnder Armour KidsProduct NameGrade School Infinity 3.0 (Big Kid)ColorBlack/Vivid Magenta/Morph GreenPrice$58.50MSRP: $65.00Rating