I just finished making this pair of US Size 9 ultralight camp shoes for my Dusky track walk which I start on Monday. They are made from 3.6oz/yd2 Dyneema fabric. Together with a pair of down socks from https://goosefeetgear.com/products/down-socks/ (approx 50 grams per pair), I should have nice dry, warm feet at the end of what is usually a fairly wet slog each day. I will post the pattern and instructions when I get back (promise). I made these in a hurry . I could have trimmed a couple more grams off the back pieces which i simply sewed inside. I will see how much the next pair weighs. My guess is 16- 17 grams.