Tamrac MAS padded pockets

[Patrick 10D]

I have a Tamrac Expedition 5 (5275) M.A.S. backpack for my 20D and gear. When I travel, the backpack is full, i.e., no room for any new gear.

I will be picking up a new EF 300 f/4L lens next month when I travel to Austria, and I would like to buy a lens case/bag for this lens. When I travel back to Finland, from Austria, I do not want to put the lens in my Samsonite suitcase (SAS is well known for sending my luggage to "Turkey" in stead of "Turku"). Therefore, I need something to store the lens in, on the outside of the backpack.

I have found this accessory from B&H:

http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=221182&is=REG

The internal length seems more than adequate for the almost 9" long, 2.6 lbs., EF 300 lens, although the pocket is a bit on the wide side. It also looks a bit "flimsy" IMHO, at least compared to some of the other Tamrac lens cases.

Could anyone with this lens and a Tamrac backpack, let me know if this is a good option? Or if not, please suggest something else?

Tamrac does make some other lens cases, but none seem to be using the MAS system.

Any advice would be appreciated.

[Harry Settle]

Those pockets are for things other than lenses. They also make at least 2 different size lens pouches for the MAS system. You probably will need the large one. The lens pouches are padded well.

[HJMinard]

What Harry said. You need one of these (http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=198713&is=REG) ... assuming it's large enough. I believe that's their largest MAS lens case.