Our new ethically produced, eco-friendly and sustainably sourced crop tops and bib stocks are made from 93% Tencel ™ and 7% elastane, giving the fabric long lasting softness, a comfortable feel, excellent breathability and extremely good colour retention.. Tencel™ is produced using the Lyocell process which changes wood into a textile fibre. It is mainly derived from the eucalyptus tree, a sustainably sourced raw material and is produced using a closed loop process, keeping the environmental impact of production extremely low and also allowing the production process to be certified as carbon neutral.