The Timberland Premium 6 Inch Lace Up Waterproof boots offer relentless waterproof performance and an instantly recognisable work boot design. Other essential features of this model include its 400 grams of warm, down-free PrimaLoft insulation, a padded collar that ensures a comfortable fit around the ankle, and a rubber outsole with lugs, providing optimal traction. The design is completed with a ReBOTL lining, a fabric made with at least 50% recycled PET plastic, and a removable anti-fatigue insole. Features: Upper made from soft, grainy, waterproof Premium Timberland Leather Timberland supports responsible leather manufacturing through the Leather Working Group Lace-up closure Padded collar Lining made from ReBOTL fabric, a material made with at least 50% recycled PET plastic 400 grams of PrimaLoft insulation Removable anti-fatigue insole Steel shank for increased arch support Seam-sealed construction Rubber outsole with lugs Technologies: ReBOTL fabric This environmentally friendly fabric is made from RPET (recycled polyethylene terephthalate) textile filament, created from non-biodegradable recycled PET plastic bottles. This material allows for the design of products made with 50% recycled PET content, significantly reducing the environmental impact of certain production processes. Certified Tannery One or more of the main components use at least 50% leather tanned in facilities with a silver certification awarded by an external environmental audit. The Leather Working Group evaluates and ranks these tanneries based on energy consumption, waste generation and disposal, and water treatment. PrimaLoft PrimaLoft insulation is a technology with permanent water resistance designed for the United States military. Even when wet, it retains its insulating properties as well as its lightweight nature to provide warmth and comfort. It is the best synthetic insulation on the market.