Spyder CORE Half Zip Sweater - Junior Boy's: Spyder clothing was inspired by their race heritage when they made the Spyder Half Zip CORE sweater. The next generation of medal-winning skiers will love this Spyder sweater-pullover which features Spyder’s exclusive CORE sweater technology. This Spyder ski sweater also features an exclusive knit rib exterior with a bonded fleece backing that provides ultimate comfort as a layering piece or when worn alone.