Lightweight 100% recycled polyester rip-stop with WR surface
treatment to repel water
Inner Material
100% recycled polyester taffeta with stain resistant finish
The Big Agnes System is a different design than the traditional sleeping
bag lying on top of a sleeping pad. Instead, they join the two together.
With the Big Agnes System, the pad slides into a sleeve on the bottom side
of the bag and the top two-thirds of the bag is insulated like a traditional
bag. When insulation material is compressed under your body it loses
most of its ability to insulate. Big Agnes eliminates the
underside insulation and replaces it with a sleeve to accommodate the pad
which provides the insulation. This design provides a secure foundation
so you stay on the pad all night. Other features include weight savings,
reduced packed size, increased girth and comfort. Click
here to see pads.
Tumble Mountain 20o Features
Features (patent pending) Flow Construction, made by Insotect for
Big Agnes, which revolutionizes down sleeping bag design
Integrated pad sleeve design keeps you securely attached
to the pad from the hips up while allowing freedom of movement for
your legs
Half pad sleeve with adjustable strap holds ANY 20" wide rectangular
or mummy shaped pad
Mummy shape decreases weight & packed size
Recycled mesh storage sack & nylon stuff sack included
Built in pillow pocket holds a fleece or Big Agnes pillow
Interior fabric loops for sleeping bag liners
70" YKK #8 zipper made from recycled materials. Mate together our
left and right zip bags with the same size zipper
No-draft collar seals around neck to keep cold air from sneaking in
No-draft wedge insulates the connection between the bag and the pad
No-draft zipper tube insulates along the length of the zipper
Shell and Pad sleeve: Lightweight 100% recycled polyester rip-stop
with WR surface treatment to repel water
Detailed Descriptions
Flow Construction (patent pending) by Big Agnes/Insotect
Eliminates lateral and vertical down shifting by using vertical chambers
with internal Flow Gates to regulate fill positioning and density.
Strategically placed Flow Gates inside the vertical chambers minimize
vertical down shifting while vertical chambers themselves minimize
lateral shifting. The continuous Flow chambers eliminate potential
cold spots which can occur with side seams and contour to the body
for increased user comfort
