- Alto colour denim is upcycled from leftover fabrics: 97.5% cotton; 2.5% elastane- Celeste colour denim is upcycled from leftover fabrics: 98% cotton; 2% elastane- Sky colour denim is upcycled from leftover fabrics: 80% cotton; 18% REPREVE polyester (from recycled plastic bottles); 2% elastane- This garment is colored using dyes independently certified to be free from harmful levels of toxic residues and heavy metals- Zinc alloy (nickel free) hardware accessories and trims- Produced in Mauritius