Backpacking
Backpacking light - what is good weight?
The most impactful items are your sleeping gear(tent, bag and pad) and your pack. Better choices in these can easily save multiple pounds. Most other items you will be looking to save ounces.
Sleeping Bag Winter
Rating of 20-30 degrees
weight
poor > 4lbs, packs to 12" diameter x 20" long = 720cu inches(12 L)
good < 4 lbs
better < 3 lbs
best < 2 lbs, packs to 8" diameter by 15" long or smaller = 240cu(4L) inches or 3x smaller than poor choice
Backpack
60L - 70L volume
weight
poor > 6 lbs
good < 6 lbs
better 3-4.5 lbs
best < 3 lbs
Sleeping pad
weight
poor > 3 lbs
good < 2-3 lbs
better 1-2 lbs; < 4L packed
best < 1 lbs; < 2 L packed size
Tent
Best option is splitting a tent, much easier and cheaper to get a 6lb or less 2-3 man and split than a <3lb 1 man
weight
poor > 4 lbs
good 3-4 lbs
better 2-3 lbs
best < 2 lbs