Not only do you feel lighter on your feet ever since you switched out your fat rope for Mammut's 9. 2mm Revelation Dry Climbing Rope, you also have more packing space for beers. Beyond that, skinnier ropes tend to reduce rope drag on ever-wandering multi-pitches, but that's dependent on how smart you place pro. Mammut treated both the rope and core and sheath with Dry to meet UI's standards for minimum water absorption. This construction also eliminates sheath slippage and resists abrasion for long-lasting durability.