Hi Gary,
The Lite 45 and the XMT 45WTS are very specific bags. Both are High Lab, which is the Ferrino professional series. All products of this line are tested in their high altitude laboratory in the Alps
http://www.highlab.it/en/highlab-techno ... boratoriesThey are also made using premium materials, and they come with an extended 3 year warranty, which is exceptionally long for this type of gear.
The Lite 45
http://adventurefriends.com.au/ferrino-lite-45/ is a minimalistic backpack with a weight of only 800g. This backpack is made for mountaineers leaving their last advanced camp, going for the summit.
Designed and tested by the legend Silvio Mondinelli
http://www.ferrino.it/en/homepage/ferri ... mondinelli this backpack is like him, no fuss. Mondinelli is one of only six people in the world to have climbed all 14 eight-thousanders without oxigen, and he is a believer in ultralight and minimalist gear.
The XMT45WTS
http://adventurefriends.com.au/ferrino-xmt-45-wts/ is a much tougher bag, ideal for rock climbers and very rough bushwalking. Made in Cordura with reinforcements in Hypalon, this bag uses the WTS (Welded Technical System) technology. This means that there are no seams, but welded channels, making it waterproof even during extended walks in the rain. So no need for a rain cover here! You can remove the waist belt if you are wearing an harness. The weight of 1450g can be reduced removing the rigid back panel and straps, to a light 1050g
As you can see, they are very specific bags for specific activities. They are not the best choice for bushwalkers as they don't have pockets and compartments, but they are excellent for any activity above snow line, as they have specific features to give you fast access to your ice axe, helmet, rope, etc.They are also exceptionally balanced. They are also designed to be operated with your gloves on.
If you need a bag for those conditions, you are on the right track. If you need a bag mainly for hiking, I may suggest you to have a look at the Ferrino Verdon 45
http://adventurefriends.com.au/ferrino- ... n-45-blue/ which is still very light at 1100g, and it features three large pockets to organize your gear, a very breathable mesh back, and gear loops to carry your sleeping mat when your backpack is too full.
If you need any other information please let me know.
Cheers,
Rico