The gray Xpack Lens Pack from Kata provides you with a way to shoot in very cold conditions and then protect your gear from damaging condensation when you come indoors. This one is designed to hold a 70-200mm f/2.8 lens but it is also available in different sizes to accommodate various-sized cameras or lenses. It's a lightweight weather protected zippered pouch that is insulated with a soft interior that won't damage your gear's exterior.
Once your lens is placed inside the pouch, it is kept warm until its temperature stabilizes and can be safely removed without the fear of fogging up. A mesh organizer pocket is also included for small accessories such as filters. Dual zippers with pull tabs permit rapid access while a wide top carry handle makes transportation easy. The Xpack is made from a special thermo protective material.
Exclusive temperature transition control pack
Shoot in the cold, place lens inside, leave it there until the temperature stabilizes inside