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The newly adopted midsole material, FF BLAST PLUS ECO, is made from approximately 24% recycled bio-based materials. This material provides a softer landing and a bouncy feel. Focusing on the heel and ball of the foot, which receive the strongest impact when landing and kicking off, we have pursued a structure that is soft yet has a firm bounce. Supports a comfortable run. The upper is made of woven material that is highly elastic, breathable, and durable. This is a recommended pair of shoes for everything from racing to training.