u/AzureBeat

I was curious about actual volumes, so I measured all the bags in Gauze rolls. Gauze is about 2/3's as wide as it is long, so that sets the dimensions I could get.

Name	Volume	Length	Width	Depth
Vagrant	9.7gz^3	3.66	2	1.33
Sports	10.6gz^3	4	2	1.33
3drt	25gz^3	5.66	2.66	1.66
Elite	34gz^3	5.66	3	2
Mystica	42gz^3	6.33	3.33	2
Odelos	42.5gz^3	5.33	4	2
Operator	48gz^3	6	4	2
Robinson	53.3gz^3	6.66	4	2
G.N.J	65gz^3	7.33	3.33	2.66
Hypertec	74gz^3	8.66	3.66	2.33
6b	99.3gz^3	9.33	4	2.66

A few notes. The Robinson pack has a strong taper to the bottom, likely resulting in less actual volume than is calculated from the measure at the top. The 6b is also likely smaller than calculated, as the bag has noticeably curved sides.