Marmot Mountain 2173 Ecopro 40 6'6" Sleeping Bag Features and Benefits Bag Type: Mummy--Contoured design decreases the amount of space around your body, leaving less space to be warmed by body heat, creating a warmer, more efficient bag. Shell: Semblant P-...

Marmot Mountain 2171 Ecopro 40 6'0" Sleeping Bag, Features and Benefits Bag Type: Mummy--Contoured design decreases the amount of space around your body, leaving less space to be warmed by body heat, creating a warmer, more efficient bag. Shell: Semblant P...

Features and Benefits Bag Type: Mummy--Contoured design decreases the amount of space around your body, leaving less space to be warmed by body heat, creating a warmer, more efficient bag. Shell: Semblant P-220R Eco DWR-- Construction: Wave Baffle Construc...