Testing the new Mammut 6mm rappel cord.
It's thin, and light!, with af very stiff 'hand' initially- and seems quite durable and water resistant.
Super psyched to have it in the cord quiver.
My favorite new rope investment is this Twilight Dry 70 meter though! (rated as a double and half rope). At 7.5mm wide and 38 g/m, it just feels 'right' for ski mountaineering applications.
Someone recently asked me if I'd recommend the 40m 6mm rap cord for glacial travel, and I'd definitely say no. The Twilight Dry (perhaps cut to a 40m length :) would be the way to go in my opinion.