Timberloop Trekker Hiker. Durable: Eco-conscious, LWG-rated leather for lasting durability and craftsmanship. Breathable: ReBOTL™ comfort fit sock bootie for lightweight breathability. Circularity: Rethinking how new products are designed, made, and how the life of existing products can be extended. Timberloop Trekker Hiker. Durable: Eco-conscious, LWG-rated leather for lasting durability and craftsmanship. Breathable: ReBOTL™ comfort fit sock bootie for lightweight breathability. Circularity: Rethinking how new products are designed, made, and how the life of existing products can be extended.