Big Agnes

Sidewinder SL Sleeping Bag: 20F Down

DownTek is a water-resistant down insulation that retains its warmth even when wet. This means that if you're caught in damp conditions, your sleeping bag or jacket will still keep you warm, unlike traditional down which loses its insulating properties when wet. This makes DownTek an excellent choice for outdoor enthusiasts who face unpredictable weather.

Eco Synthetic Insulation is made from 100% recycled polyester and is designed to mimic the warmth and compressibility of traditional down. It offers a more environmentally friendly option without sacrificing performance. If you're looking for a sustainable choice that still provides excellent insulation, Eco Synthetic Insulation is a great alternative.

A mummy-shaped sleeping bag is designed to be narrower at the feet and wider at the shoulders, which helps to minimize air space inside the bag. This design effectively retains heat, making it warmer for the user. If you’re camping in colder conditions, a mummy shape can significantly enhance your comfort and warmth.

An ambidextrous zipper can be opened and closed from either side, allowing for easy access to your sleeping bag no matter how you’re positioned. This feature is particularly beneficial for side sleepers or those who frequently get in and out of their bag, making your camping experience more convenient and comfortable.

European Norm/ISO Ratings provide standardized measurements for sleeping bag performance. The "Comfort Rating" indicates the lowest temperature at which you can sleep comfortably, while the "Lower Limit Rating" shows the lowest temperature for survival. Understanding these ratings helps you select a sleeping bag that meets your needs based on the expected weather conditions during your outdoor adventures.

Yes, DownTek insulation is specifically designed to perform well in wet conditions. Its water-resistant treatment allows it to maintain warmth and insulation properties even when exposed to moisture. This makes it an ideal choice for camping, hiking, or any outdoor activities where you might encounter rain or dampness.