The NIMBUS MIRAI™ shoe has been specially designed so it can be recycled at the end of its life. So please return them for recycling when you’re done.Single material upper: Made from uniform recyclable polyester with no overlays to enable efficient disassembly.ASICS ORIGINAL GLUE: Provides durable bond between sole and upper that can also be pulled apart easily for recycling.FF BLAST™ PLUS ECO midsole: Delivers soft and lasting cushioning, made from approximately 24% renewable sources such as leftovers from sugar cane processing.Each NIMBUS MIRAI™ will emit just 6.1kg of COâ‚‚e across its lifecycle. Material – 4.1kg Manufacturing – 0.7kg Transport – 0.4kg Use – 0.1kg End-of-life – 0.8kg