Containers are important for any character. They make it so you can carry much more than you normally would be able to without them. For best results, use worn containers.

Weight reduction = % by which the container reduces when full. i.e. hobbit-made backpack makes 6 bottles weigh 4, so thats a 33% reduction

Some containers have better bonuses when worn, so its organized under weight reduction like so: worn/not worn. If only one value shown then there is no difference.

Worn Listings

Name	Capacity	Weight Reduction	Empty Weight
a hobbit-made backpack	6	33%	2
a bag	6	33%	1
a fine fur pouch(ranger)	6	66%/50%	1
a fine fur pack(ranger)	9	33%	1
a large leather sack	10	40%	1
a leather backpack	10	50%	1
a fine fur sack(ranger)	11	55%	1
a wanderer's pack	13	54%/38%	1
a canvas pack	16	38%/31%	1
a fashionable knights pack	16	50%	1
a soft sack	18	44%/28%	1
a provision sack	20	35%	1
a large silk pack	20	33%/30%	1
an equipment rucksack	20	33%/30%	1
a rugged knapsack	22	64%/32%	1
the belt of the giant	30	66%	2

Not Worn Listings

Name	Capacity	Weight Reduction	Empty Weight
a footlocker	15	33%	2
a chest*	40	35%	5

Chest from fubs and chest from brigand seem the same

Credit

Information taken from notes gathered by GhanimX, notes found on proboards, and some stuff from cosms site.