The Black Diamond Mercury Mitt is a popular choice for year-round use and combines a BD.dry waterproof insert with an Empel DWR on the shell. The removable insulated liner, filled with Primaloft Gold Cross Core, dries quickly, and insulates even when wet. A four-way stretch fabric shell and a long gauntlet cuff keep spindrift and moisture outside, while the goat leather palm and additional reinforcement layer stands up to rocky terrain, repeated rope handling and the general wear and tear associated with dedicated mountain use.