Images below are of the Marmot Lithium which has the same general features
as the Lithium Membrain. The difference between the two bags are the fabrics
being used which also affects the weight of the bags. Other than fabrics and
weight, the bags are virtually the same.
Marmot Lithium
The Lithium features a full length zipper fully
opened in photo above. The Lithium also features a down-filled collar which
can be seen inside the bag near the hood, it's half black and half orange
and has a drawcord.
Lithium Regular with a 5'11" model
Image above shows a close up of the down-filled
collar on the inside of the Lithium. The top collar is being held by a
models hand for size reference while the bottom collar width is shown between
two green lines.
Close-up of the interior of the zipper which features
zipper snag guards on both sides of the zipper (widths indicated by red
double sided arrows).
2-way zipper allows for venting of the foot area
in warm weather.
Marmot Lithium Regular in its included stuff sac
next to a gallon milk jug filled with 2.5" of water which weighs the
same as the bag in its stuffsac.
Lithium Standard & MemBrain 0° F Features
Classic Trapezoidal Foot Box For More Foot Room
Full-length Zipper
Hood Draw Cord Positioned for Easy Access
Insulated Draft Tube Eliminates Cold Leaks Through the Zipper
Stretch Tricot Baffles Provide Ultimate Strength, Durability and
Bag Life
Stuff and Storage Sack Included
Velcro®-free Face Muff Keeps the Drawcord and Zipper Away from
Your Face