Under armour coolswitch junior shorts these under armour coolswitch junior shorts are of a fitted design giving you a more athletic cut featuring under armour coolswitch technology which is an exclusive coating on the inside of the garment that pulls heat away from you skin making you actually feel cool and able to perform longer these shorts are upf 30 which helps to protect your skin from the suns harmful rays whilst the 4 way stretch fabrication allows greater mobility in any direction