In reply to goatee:
They have a different kind of waterproof lining.
Bi-Flex System Technology for superior flexion and comfort
Waterproof and reinforced one piece Dynatec with Lorica.
HFS - Heel Fit System: holds the foot firmly in place and greatly enhances comfort
Thermal Layer with Thinsulate insulation
Cordura outer
Dry-Line® Waterproof lining
Vibram Teton Outsole
Three-piece adjustable Velcro Tongue System (VTS).
Neoprene closure for thermal insulation.
Rubber rand for protection.
Weight 1980g (pr)