Are you sure HMG is using a 375 ? Most of the UL packs are using a 50D or 150D polyester face fabric with the dyneema / mylar laminate laminated to the inside. I have seen very few use a "full woven" on anything except Mchale. Cilo site says 210 Denier Nylon / Dyneema Ripstop .. and a Dyneema from Xpac which is about a 400D ripstop.
210 D dyneema ripstop to me is more marketing than anything, and the 50D / 150 faced ones are not that good on the face (we have used it before). It's the face that wear outs, and the interior cuben makes it loud in the cold and adds waterproof and tear strength.
I am not sure on the 100D pure woven with a TPU, I have some to test. My guess is it performs really well about like a 300 -400 D fabric. The weave is tight, , and frankly I'd trust a TPU ..after all that is what boats have used. The spectra we have worked with and tested (I have a 400D pure woven spectra pack with me today ... with 200 D / 100 D spectra grid stop accents. I can tell you, we have done our testing on those fabrics, so when we get around to testing the 100D pure woven ... we will have a good comparison. I can say, we have tested 210 D dyneema nylon ripstop that is commonly available in a lot of packs .. and we don't use, because we do not feel there is a performance benefit we could articulate.
