Built to tackle the trails and look good doing it, Timberland's Rolston is completely waterproof and features a stabilizing TPU shank, anti fatigue midsole technology, and a rubber outsole for all mountain use and year round adventure. . Compression molded EVA midsole for lightweight cushioning and shock absorption. Internal TPU shank for torsional rigidity on uneven and rocky terrain. Anti fatigue removable footbed adds comfort and shock absorption. Green Rubber outsole 42% recycled rubber designed for all mountain use. Waterproof, breathable membrane and waterproof construction keeps feet dry and comfortable. Premium full grain waterproof leather uppers. Leather is from a tannery rated Silver by the Leather Working Group for its water, energy and waste management practices. Full tongue gusset provides comfort and keeps debris out. Climbing grade rubber tip for durability and protection. Earthkeepers footwear is designed and manufactured with Timberlands commitment to the environment in mind, using recycled and eco conscious materials whenever possible.