| hiking/backpacking/climbing... Very different activities and pretty broad... Where are you planning on going/doing?
Hiking: Traction device if needed (crampons), flotation if needed (snowshoes, skis), headlamps - 2 of them, My Petzl e-lite is smaller and lighter than extra batteries for my main lamp, BD Spot, so I carry it as the emergency instead of extra batteries, 2 nalgenes and one nalgene cozy to hold one for easy access, 1 thermos with guaranteed hot drink, packs - depends, maps+compass, extra gloves, extra hat, goggles, balaclava.
Climbing: I don't really rock climb in the winter but for ice climbing I carry everything mentioned above plus all my climbing stuff. I have the EMS Arete pack, which is no longer made.
Backpacking: Everything in the hiking section plus bag, pad (sometimes extra pad), stove, cooking stuff, down camp booties, tent, fuel. I have gotten away with 4500cu in packs for overnighters in winter - ymmv
__________________ Sign, sign everywhere a sign... pointing out the trails, can\'t make up my mind. |