The Fuse 3.0 is a game-changer in stability, fit and traction. We've widened the last and upgraded the PUMAGRIP outsole. This training shoe is athlete-inspired and community-tested for strength and enhanced cushioning. Upgrade your workout with the Fuse 3.0. PUMAGRIP: Durable rubber outsole that provides multi-surface traction New last for wider, stronger stance TPU heel piece for stability Mesh upper Piped Formstrip on lateral side "FUSE" branding on tongue