For the warmest possible gloves setup, the Klim 4.0 liners incorporate 80 Grams of 3M™ Thinsulate™ Platinum Insulation on the backhand. Leather palm allows maximum durable tactility inside a Klim GORE-TEX™ glove (the liner stays in place). Includes e-touch technology on finger and thumb. Replace existing fleece liners or simply upsize any non-insulated Klim glove and enjoy the benefits of a superior insulated liner.