The suede upper is crafted from the reverse side of leather, buffed to achieve a soft and flexible finish. This material is treated with water-repellent oils that are free from PFCs to provide protection against light rain. suede upper suede and organic traced leather details amazon rubber, bio-based e.v.a., recycled e.v.a. and organic cotton insole amazon rubber, mineral silica and synthetic rubber outsole recycled polyester lining organic cotton laces