Most stuff sacks are made of newer fabrics like coated polyester and ultralight silicone-impregnated nylon.
While the fabric by itself is waterproof, the drawstring closure in most stuff sacks will not be so be cautious about finding it into water and when you tie your sleeping bag to the external of your respective backpack ensure you a minimum of include the drawstring closure having a waterproof substance to protect against rain.
Newer stuff sacks like the eVac Dry Sack from Sea To Summit don't use drawstring closures but instead you roll the sack along after which it shut the buckle. This accomplishes two things. First, once you roll the sack decrease air is pushed out from the base so h2o can not get in. Second, it will allow you to avoid wasting both equally house and excess weight. The weight saving even though will not be these types of a big offer. You only help you save a little little bit of weight but the space keeping is a lot appreciated.
The lightest stuff sacks are manufactured from silicone-impregnated nylon parachute cloth. It is usually as light as 0.five oz or maybe significantly less. GoLite employs this kind of fabric and they made an improvement for the drawstring closure by adding a collar instead of just a drawstring and flap configuration. Outdoor Research on the other hand utilizes an excellent waterproof fabric termed Hydroseal. This fabric is challenging and might take care of rough use but even now limp sufficient to mold by itself to your contents in the sack. This things sack is available from the drawstring-flap configuration likewise as roll closure secured with Velcro bindings.
Compression and Size
Most things sack suppliers have some sort of compression mannequin with straps, laces or double drawstrings that reduces the quantity by nearly half. It is possible to also things in your own down jacket or parka collectively using the sleeping bag into the sack. Be certain that yours is massive plenty of for you to very easily put in whatever you intend to fit in.
Never get a small stuff sack just since you think it would help you save you space since in most situations you'll just have unused, wasted space in your own backpack as a end result. A different trouble is always that even when you are able to cram your sleeping bag and also other things into the sack when you're in your house, carrying out so in a smaller amount than ideal ailments on an empty stomach using the cold wind biting at you can flip it into a monstrous process. Get one which's huge sufficient to consider its load with additional area to spare, leaving it soft, malleable and uncomplicated to stuff.
I use Outdoor Research Hydroseal DryComp Sacks but I'm contemplating of getting the eVac Dry Sack from Sea to Summit for my self