gistfile1.txt

Bivy

http://zpacks.com/shelter/bivy.shtml
http://www.mountainlaureldesigns.com/shop/product_info.php?products_id=30

Emergency
http://www.adventuremedicalkits.com/survival/shelter/survive-outdoors-longer-emergency-bivvy.html
http://www.adventuremedicalkits.com/survival/shelter/survive-outdoors-longer-thermal-bivvy.html
http://www.adventuremedicalkits.com/survival/shelter/survive-outdoors-longer-escape-litetm-bivvy-1.html
http://www.adventuremedicalkits.com/survival/shelter/survive-outdoors-longer-escapetm-bivvy-1.html

Tarp

The duomid isn't the type of tarp a bivy is needed with. The bivy is usually paired with a 7x9 A frame type tarp.
Ps: If you use a larger A frame style tarp you don't need a bivy either :)

http://www.mountainlaureldesigns.com/shop/product_info.php?products_id=76
http://www.mountainlaureldesigns.com/shop/product_info.php?cPath=21&products_id=132
http://zpacks.com/shelter/tarps.shtml
http://zpacks.com/shelter/hexamid_pocket.shtml

Tarptent

http://www.sierradesigns.com/product/tensegrity-1-elite
http://www.trekkertent.com/home/home/3-stealth.html
http://www.tarptent.com/protrail.html
http://www.sixmoondesigns.com/tents/Trekker.html
http://www.sixmoondesigns.com/tents/LunarSolo.html
http://www.sixmoondesigns.com/tarps/Deschutes.html
http://www.sixmoondesigns.com/tarps/DeschutesCF.html
http://www.sixmoondesigns.com/tarps/DeschutesPlus.html