The Beast -40F Description.
These rugged Oversized Sleeping Bags are Multi-Season Bags that are a perfect choice for any cold-weather hunting, fishing or camping trip.
Specifications:
Size: 87" x 42" (220 x 107 cm)
Shape: Rectangular
Construction: 2 detachable insulated layers
Outer shell: Heavy duty poly-cotton canvas
Lining: Soft poly-cotton with a detachable flannel liner
Outer bag filling: 3.4 lbs (1550 g) 
Inner bag filling: 3.4 lbs (1550 g)
Total filling: 6.8 lbs (3100 g) of Insufil 4 thermofibers
Zippers: #10 heavy-duty/2-way
Stuff Sack: Heavy duty duffel bag (Green)
Total Weight: 19 lbs (8.6 kg)