It's hard to tell until you see one in person, but the Trangia fuel bottle is a great, high-quality addition to your Trangia kit. The half-liter size is more narrow than a bike water bottle but just a hair taller...easy to stash in a backpack, pannier, etc. The valve is a pleasure to use. Along with the multi disc...while it's all plastic add-ons, it's great quality stuff that really improves an already great system.
This review was written in the old system and had content requirements that are different than reviews written today.