The ergonomic corkscrew. The Grenouille's shape, when it is fully opened, is reminiscent of the "leaping frog" for which it is named (French). Its tapered handle, which fits comfortably into the curve of your palm, combines with the soft thumb-rest at the top to provide perfect ergonomic control. Efficient five-turn Teflon coated spiral. Stainless steel Boot Lever. Micro-serrated blade. Available in dark green.