Chunky calf height leather Chelsea boots by Grenson. The ‘Doris’ boots are crafted from durable black pull up leather and design with long tonal elasticated side gores to easily slip them on and off. The round toe boots sit on Grenson’s chunky Cass sole with an aggressive tread outsole and lightweight design for long-lasting comfort. A red leather insole with a debossed logo completes the tall Chelsea boots. Upper: Leather. Sole: Rubber.