OWL Outdoor Wild Life
Discover what you didn’t know you needed…
And Solve The Problem!
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A Revolution in the Making!
From the beginning, the Evolution SlumberSac was designed to eliminate the ever present, long-standing pain points experienced when sleeping outdoors
It All Began With a Bold Idea.
Midnight trips in the backcountry don’t have to be miserable. Meet the OWL Evolution Slumber Sac: lightweight, versatile, and built to keep you cozy and ready for adventure.
Stay Dryer, Longer!
🚿WATER TEST: PASSED🚿 Watch, as we dump water on the Evolution SlumberSac—no soaking, no drama. Next-gen DWR repels moisture, keeping you dry even with the footbox open. Engineered for the wild, field-tested, and trail-approved. Mother Nature? Bring it on.
The Birthplace of OWL - Outdoor Wild Life and Evolution SlumberSac: Crested Butte, CO. A great place to sit and ponder ideas about how to make this venture work! #SunsetAtGrantLake
A view, to get ready for the winter brainstorm sesh...
Walking around the mountain office in Fall, clearing your head with fresh mountain air, is a great way to develop more ideas on sleep systems.
Let winter in Crested Butte BEGIN! The PERFECT time to climb into the Evolution SlumberSac.
The backside of "Mount Crumpet" (aka: Crested Butte Mountain) is a great view while working on how to build this idea!
Winter is coming John Snow(MORE!)
FINALLY! Winter is upon us. But will it be the banner year? Only time will tell.
Our Founder at OWL - Outdoor Wild Life, learning that this isn't going to be an easy road. But perseverance pays off!
Ever wonder what the first Evolution SlumberSac started off as?
A day at OWL in Crested Butte starts early... (predawn views from the office)
The first view of what the footbox will look like
The first view of how the footbox opens (and attaches securely to the shin area for mobility proposes)
The open and attached footbox of the finished V1 Evolution SlumberSac prototype
The back footbox attaches like the front, can be lowered to get back in the tent, and then zipped back up.
Juniper after being subjected to Dad's new skills: "I don't think I like this 'New You' Dad... is this really necessary?" Dad: "You'll thank me come January, trust me!"
January 2025's -25° temps in Crested Butte, CO inspired the ActiveCore, ThermaCore, and HeatCore Liner addition to the line! Brrrrr!!!
The snow cave proving grounds for the Evolution SlumberSac in Crested Butte after getting snowed in
Just another average day at the OWL - Outdoor Wild Life offices in Crested Butte
The first big fan of the OWL - Outdoor Wild Life Evolution SlumberSac. The local Pine Marten just stopping by to check in on the progress and see when it will be ready to go to market...
"Sleeping bag"? Hardly! This is a complete sleep system that moves with you, whether it's tracking down gear in the campsite, heading out for a midnight pee-break, or just lounging while making coffee by the campfire.
Unzipping the footbox and putting on boots makes getting out of the tent so much less of a hassle!
Prototype #3 being field tested in the misty, rainy, boggy highlands of Scotland.
Walking is very easy in the Evolution SlumberSac. Get to where you want to go without needing to leave the warmth and comfort.
You can certainly make use of the "facilities" when Nature calls... ; )
Our trusty OWL Assistant, giving the mobility a 'sassy' try
No other sleeping bag in the industry can do what the Evolution SlumberSac does, even if it's still in the prototype stage!
Some of the forms the Evolution SlumberSac can take
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