Today I’m in Yosemite National Park in California doing a gear review on the Sea To Summit Thermolite Reactor sleeping bag liner. For those of you who know Seat To Summit you know that they make great products from shelters to sleeping bags to outdoor apparel and the list goes on. If you don’t know then you should definitely check these guys out.

My experience with using this liner is that here in California it’s warm during the day and chilly at night. If you have never been in the High Sierra or at elevation you don’t know that temperatures can drop quickly. It’s best to be prepared as you never know when you might need it. I have also used this as a sleeping bag on warm summer nights where I wouldn’t normally need a full sleeping bag to save weight and space in my pack.sts

They make these liners in 3 different models. The 1st is this one which increases your sleeping bag warmth by 15 degrees. The 2nd is the Compact Plus which increases to 20 degrees and the 3rd is called the Reactor Extreme which brings up the warmth to 25 degrees.

They are very well made as all Seat To Summit Products are. The liners also come with a stuff sack and they are odor resistant and machine washable.

 

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