I was wondering how some of the Tom Bihn fabrics compare to each other (motivated initially by weight), and I found that it was not always easy to tease out the differences when looking at the Materials Glossary, so I thought I'd make a comparison table (plus fold in some info from the Color List + News thread.

Name Weight (oz/yd2) Current colors
Aether 2.4 Northwest Sky, Island, Violet, Wasabi
Halcyon 200d 4.2 Northwest Sky, Island, Ultraviolet, Wasabi, Iberian
210d ballistic 5.8 Black, Cloud, Coyote, Dawn, Island, Grass, Viridian
Halcyon 400d 5.9 Black, Original
420d Parapack 7.6 Black, Navy, Steel
630d 50% recycled 7.8 Nebulous Grey, Logic Blue, Seapine Green
525d ballistic 11.8 Black, Aubergine, Deep Blue, Nebulous Grey, Mars Red, Burnt Orange, Cloud, Alphaviolet
1050d ballistic 14.7 Black, Aubergine, Navy, Steel, Verde, Burnt Orange, Coyote

Of course, there's more to a fabric than its weight and color! Refer to the master materials glossary for more details.

(My reason for doing this at all was to help myself understand why a given product might be made with some set of materials instead of others.)