Puma formstrip on lateral and medial sides Rubber midsole and outsole Synthetic leather upper. Taking cues from '90s US college campuses and college wear, Puma Caven 2.0 is a nostalgic collegiate inspired design immersing you into vintage American aesthetic. The constructed upper stays true to the PUMA DNA, and the SoftFoam+ sockliner provides superior cushioning and optimal comfort for every step of the day. Synthetic leather upper Rubber midsole and outsole PUMA Formstrip on lateral and medial sides