Under Armour Kids - Motion Bike Shorts (Big Kids). Color Black/Jet Gray. On sale for $22.50. MSRP $30.00.. 5.0 out of 5 stars+3Brand NameUnder Armour KidsProduct NameMotion Bike Shorts (Big Kids)ColorBlack/Jet GrayPrice$22.50MSRP: $30.00Rating5Rated 5 stars out of 5(1)