What are you wearing for those 3 to 4 days bivy hunts

merino wool

Fleece or light weight wool,both of which are comfortable in a wide temperature range.I also carry packable,breathable rain gear,which can also do double-duty as a wind-blocking layer.

Depends on the season but I wear UA with a combo of fleece and wool layers or my old BDU's. I also carry light raingear, and a Poncho. I tend to carry more than I need and after a couple days of packing it around I curse myself. But I feel like it's better to have it and not need it, then to need it and not have it.

I will be wearing UA, fleece and a light rain jacket.  Poncho as a backup seems like a good idea for the heavy downpours etc.  If it's raining too much, I will be in the tent drying fletching. hehehe

X2, merino wool

We wear nothing but layers! From 10 deg--70's we layer, base is merino wool or U/A longsleeve on both. then then a poly shirt & light wool with a light camo or non-camo longsleeve over that. I would add 2 more type shirts to pack for night time comfort. Shed a shirt or add a shirt depending on temps. We wear or pack no jackets, they're too bulky & take up lots of space!

 ElkNut1

I like wearing a Microtex 7 button shirt and pants in outfitter camo or a EMS nylon 6 pocket convertable olive pants, a Windpro fleece vest, a boonie hat, Endura Skin baselayers,liner gloves and/or fingerless fleece gloves, merino wool socks and Merrel hikers. In the pack is a Space Rain suit, extra baselayer, socks and a down vest OR a wool jac shirt. Depends on conditions, time of year or elevation. This setup is for mid Sept.

Merino wool base layer, sitka ascent pants, sitka vest, sitka jacket if needed, wool sweater, ifit gets cold cabelas outfitter series fleece hoodie. Packable rain gear. Asolo boots.
Kifaru AG2 backpack.

Lightweight poly blend base later, Duofold wool/poly blend mid layer on both bottom and top.  I usually wear or have in my pack a snthetic fleece top layer shirt.  Covered by a cotton chamois shirt, maybe a fleece vest, and a lined jacket on the top and generally cotton chamois pants or maybe wool if it is cold.  I have a lightweight PVC poncho if it rains. I like a synthetic beanie or stocking cap in cold weatehr too.  I wear smartwool or wigwam wool blend socks with poly liners and have Lowa Banf boots.

 

Merino wool base layer,wool shirt,wool sweather and wool KOM jacket.Plus some little weight raingear from Cabela's.

merino wool for me too

Wool layers for me as well. Tough to beat wool.

make sure you get good socks AND underwear!  I will second smartwool socks- if I had the money I would wear them everyday of my life!  To me underwear is very important too- leave your tighty whiteys at home! I found some justin st charles merino boxer breifs on sale and they are fantastic!

I wear smartwool sock.  They are the best.

Russell APX2 clothes it is awesome stuff I liked it so well last year that I bought another outfit of it.   Widow

Smartwool socks are ok, I prefer Filson wool socks. I won't buy Smartwool anymore as I heard from another site that Smartwool donates to pita.

Anyone else hear this?  

Shedrock, I just sent off an inquiry about this to Smartwool. I'll let you know their response. They do help fund alot of "envirnomental" organizations. Being as they are in with REI and others it wouldn't surprise me if they are pro-PETA.

I love merino wool also. I use it for late hunts. For the early season (end of Aug.-mid Sept.) I wear mostly cotton camo for a cooling effect. But in the high country it is always a good idea to pack the wool. Remember that the majority of heat loss is through your head! A good cap is the way to go. I like to wear silk liner socks and then the wool socks. This has helped me to reduce any blisters from starting.

And it is unanimous. Wool. A light layer of silkweight underwear and a flannel on top, and my KOM pants in any weather. I keep a warmer shirt in my daypack just in case. Plenty of dry socks is key for me on any elk hunt, but when they're bugling, nothing else seems to matter...