They are made of synthetic material and have fleece on the inside

They are light and flexible with a chunky

It is made with a leather upper and lining

leather and nylon upper

they are also really easy to put on and take off

chelsea classic winter black size:EU 42 They are made of syntheticBeautifully constructed Chelsea Classic Winter are uniquely made with traditional Tretorn craftsmanship and an exclusive heritage design on the inner lining. The boot has a light sole construction to increase the flexibility while still retaining the durability and quality of the shoe. Chelsea Classic Winter is perfect for everyday use. Waterproof Warming lining Sole with extra good comfort grip Metal shank in midsole for extra stability Elastic on