Lightweight and sporty styled safety trainer, made using TENCEL upper materials, recycled lining, and featuring BLOOM and SOLUM outsole technology. Alder uses some of the most sustainable materials available in the footwear world. Protection is provided by a fibreglass toecap and our ultra lightweight kevlar protective midsole. The footbed is made from partly BLOOM Algae helping to clean 20.4 grams of CO2 from the air. ESD Certified EN ISO 20345:2022 S3S FO SR EN 61340-4-3:2018 ESD UK 3-13