Under Armour Kids - Rival Terry Shorts (Big Kids). Color Castlerock Light Heather/Black. On sale for $23.66. MSRP $30.00.. 5.0 out of 5 stars+3Brand NameUnder Armour KidsProduct NameRival Terry Shorts (Big Kids)ColorCastlerock Light Heather/BlackPrice$23.66MSRP: $30.00Rating5Rated 5 stars out of 5(2)