Featuring a lightweight Primeknit upper, traditional lace-up closure, and snug sock-like fit, these adidas® Kids UltraBoost 20 round-toe sneakers will keep them on their feet from the track to the trail. Support Type: Neutral. Structurally-supportive synthetic mid-foot cage. Smooth textile lining and ultracushioned boost™ midsole is optimized for a responsive ride. TORSION® SYSTEM, placed between the heel and forefoot, helps promote a more stable ride. Continental™ rubber outsole delivers reliable grip over wet and dry surfaces. STRETCHWEB rubber in the outsole flexes for increased energy underfoot. Imported. View Zappos.com Glossary of Terms adidas Kids UltraBOOST 20 (Big Kid)