First, I’m not an Ultralight Hiker, but rather selectively incorporate ultralight equipment and techniques to lighten my rather old-style pack on flyfishing trips. I’ve learned a lot from this website, and now could use some specific ideas about synthetic underwear, which I notice is generally absent from gear lists here. I need something like my Thermax bottoms under waders, and find that a similar top dries quickly (I fall down sometimes) and works well across a wide range of temperatures. However, the bottoms are 207 grams and a long-sleeve crew is 230 grams. Are there similar products on the market that weigh less? Thanks!