Built with waterproof/breathable H2 No® Hydrostorm polyester microfiber fabric They maximize durability while achieving a new standard of comfort & breathability. Merino wool grid booties – re-engineered for even better fit, they wick moisture & keep feet warm in cold water & cool on long walk-ins. A new sliding, infinitely adjustable suspension system converts easily to waist height (or any height you prefer) & allows quick "relief" without having to remove your jacket or wrestle with balky zipper access. High-wear seams feature exterior reinforcement tape for unsurpassed abrasion-resistance & longevity. Easy-access, external glued-in water-repellent zip storage pocket; completely submersible, Waterproof welded internal pocket Built-in gravel guards with abrasion-resistant scuff zones & high-filtration mesh drainage strips Removable internal knee pads Stretch wading belt Field repair kit included.