Kelty Cosmic Sleeping Bag

The 20-degree rating indicates the temperature at which the average person should remain comfortable, but it is a limit, not a guarantee. If you are a cold sleeper, we recommend pairing this bag with an insulated sleeping pad to prevent heat loss to the ground.

The expanded footbox is designed to let your feet sit naturally rather than being compressed, which actually helps maintain loft and warmth. By preventing your feet from pushing against the insulation, you avoid creating cold spots that occur when down is overly compressed.

This specific model is designed for users up to 68 inches, or 5'8". If you are taller than this, you will likely find the bag too restrictive and the hood will not fit properly, so you should look for a 'Long' version of this bag.

Yes, the 550-fill duck down used in the Cosmic is responsibly sourced. Additionally, the shell and liner fabrics are fully recycled, and the water-repellent finish is PFAS-free, making this a more sustainable choice for backcountry gear.

The dual sliders allow you to unzip the bag from the bottom up or the top down. This is particularly useful on warmer nights when you want to vent heat from your feet without exposing your upper body to the cold air.

While it is a mummy bag, the design includes an expanded footbox to mitigate that cramped feeling. However, if you are a very active sleeper who needs significant room to roll around, you may still find the tapered shape restrictive compared to a rectangular bag.