I stumbled across this backpack & immediately realized the sack provided some clear advantages, particularly when trying to pick a sack that will provide some options and versatility. <br />
Firstly, although totally up to capacity the sack was perfect for a 3 day exped which involved some mountain scrambles. Tent, mat, sleeping back, spare clothing, cooking equipment and food all fitted with nothing hanging on the out-site and movement whilst scrambling was not restricted. For a two day exped the sack would have a little space to bring along some luxuries. <br />
For Ice Climbing in New England, it was a little large for single mountain days unless extra space is needed for supporting groups but for 2 days trips, it was perfect.
This is not the fanciest tool on the market but the x monster is a steal at the price (around $150 per). I've used these tools for 3 seasons and find them great to climb up to WI4, although the thicker picks can be a bit of a challenge on brittle ice. They aren't great dry toolers but I don't think you can do better for longer alpine routes on moderate ice and snow. <br />
All together I would say they take some getting used too but the x monster will be my "go to" alpine tool for the foreseeable future.
only 60 euros, many pockets, VERY DURABLE, warm, you're not afraid of loosing a goose quill as for ultra-light and compressible light down-jackets. The perfect down jacket for ice climbing, or a single day alpinism rout.