Kids clothing Downhill-freeride jerseys Polaris-bikewear Mini Adventure Trail Short Sleeve Jersey Junior. The Mini Adventure Trail Jersey is a Childrens specific performance trail jersey with short sleeves, a V-neck and wicking fabrics to take sweat away from the skin when working hard on the bike. The jersey has a lightweight and breathable composition with a loose fit for ease of movement. Adventure graphics on sleeves finish this cool childrens trail jersey off perfectly.