Launched in June 2019, the Puma Hybrid Astro ‘Castlerock' was built for high-impact running. The eye-catching sneaker is constructed from a semi-knitted upper with a sock-like structure and bold color blocking throughout. HYBRID FOAM unites two of Puma’s most innovative technologies, IGNITE FOAM and NRGY beads, for immediate response and comfort. Beneath, the full rubber outsole provides enhanced traction.