bivvybag

• bivvy bag

bivvybag (plural bivvybags)

1. A lightweight, durable, waterproof bag, somewhat larger than a sleeping bag, that acts as an alternative to a tent.
   • 2011, Bill Laws, Byways, Boots and Blisters: A History of Walkers and Walking, page 142:

     But while De Quincey came up with a prototype for a one-person tent, Stevenson invented the bivvybag, 'a sort of long roll or sausage, green waterproof cart-cloth without and blue sheep's fur within.'

   • 2011, Michael Asher, The Real Bravo Two Zero:

     Normally these belts should contain ammunition, a foldable Hexamine cooker about the size of a Walkman, some kind of shelter — a poncho, bivvybag or spaceblanket – mugs, mess tins, waterbottles, an individualized escape kit containing useful items such as waterproofed matches, and dry rations for twenty-four hours.

   • 2019, Ronald Turnbull, Walking the Galloway Hills:

     They are indeed an exciting and challenging place for two-day or three-day expeditions with bivvybag or lightweight tent.