Under Armour Kids - Rival Terry Shorts (Big Kids). Color Black/Castlerock. On sale for $24.75. MSRP $30.00.. 5.0 out of 5 stars+3Brand NameUnder Armour KidsProduct NameRival Terry Shorts (Big Kids)ColorBlack/CastlerockPrice$24.75MSRP: $30.00Rating5Rated 5 stars out of 5(2)