If you have ever been on a backpacking or trekking trip where you had to haul all of your gear with you, you quickly realize how bulky and heavy gear can be. Every little bit adds up and after hiking for several miles seems to weigh a ton.
The Sea to Summit Spark SPI (46 degrees Fahrenheit), SPII (35degrees Fahrenheit), and SPIII (25 degrees Fahrenheit) sleeping bags are ultra portable and super light. The Spark SPI weighs just 12.3 ounces and packs down to fit in the palm of your hand. The bags use 850+ loft goose down with Ultra-Dry technology. Sea to Summit Spark SpI video after the break.