Kylee……so how light a ski/binding/boot set up is light “enough” for for uphill zone 2 training?? …..obviously not a perfect answer in ounces but??? …is just going slow enough with my usual backcountry gear to stay below aerobic threshold for training uphill on skins?? ….touring with my better in shape and younger buddies is a problem staying in zone 2 even later in the season now….touring/ski mountaineering is my winter/spring aerobic sport passion though I am now 68 yrs old and have had one knee replaced (very good/lucky result/healing)…..thanks, Chet