Think Tank Whip It Out Modular Component
This side-zippered lens bag is designed to store a 70-200 f2.8, 80-200 f2.8, 100-400 f4.5-5.6 or similarly-sized lenses in an upside-down position with the lens hood facing up, allowing for the fastest lens retrieval possible. Features a vertical auto-locking zipper.
Think Tank Modular components are lightly padded to make them friendlier to use, and they are compressible for travel purposes. The cases are padded with 1/8" - 1/4" of foam (3-5 mm) which is plenty to protect your lens. They feature a completely open top which is the fastest way to insert or retrieve a lens or other items. The bungee cord closure system allows you to securely pull the top tight, preventing anything from falling out. Inside of the Lens Changers is also a piece of fabric that can be placed over the top of the lens before closing, for extra protection.