Mummy Sleeping Bag, 3.1 Lb Synthetic Fill

A mummy-cut sleeping bag with 3.1 lbs of Poly-Therm synthetic insulation and a waterproof ripstop shell — synthetic fill that keeps working even when it gets damp.

• 3.1 lbs (1.41 kg) of Poly-Therm hollow synthetic fill — retains insulating efficiency when wet, which is where down fails
• Waterproof polyester ripstop shell over a polyester pongee lining
• Diamond ripstop outer fabric — noticeably quieter than standard nylon when you shift around in the night
• Insulated draft collar seals warm air in around your shoulders instead of letting it escape at the neck
• Smooth taped zippers that don't snag on the liner
• Mummy cut — less dead air to heat than a rectangular bag, so it warms up faster