If you are into traveling like when you go hiking or you want to go to some of the more remote parts of the world and you can’t afford the weight of a tent and sleeping bag, the best solution out there for you is the portable bivvy sack.
What’s a bivvy sack? A bivy sack is special bag that you sleep in. It’s water proof and weather proof. Now, in theory a bivvy sack can protect you from rain storms, cold, and wet grounds. In reality the level of water resistance you get from a bivy sack depends on the quality of the bag.
A cheap bivy sack might be easy on the budget, but you can be assured your nights won’t be comfortable. If it rains, you may find water leaking into the bivy sack. If the ground is wet, you might find water leaks through the bottom of the sack. If it’s cold outside, you may find yourself freezing. Spending good money on a quality bivvy sack can save you a lot of headache.
The main problems with bivy sacks are that they suffer from condensation inside the bag. Since you are wrapped up under the bivy sack, the difference in heat between the outside and inside of the bag can mean your breath and body heat collects near the top surface of the bivy sack and drips down as water. This can mean you get wet.
To prevent getting wet from your condensation, it’s a good idea to invest in breathable materials like Gore-Tex. This will mean that you won’t have condensation problems and you stay dry all night when you sleep in your bivy sack.
If you want to buy a bivvy sack, make sure you first shop online. There are a lot of online sporting good stores that will offer you a cheaper price than if you buy one from a local store.