Big Agnes Sidewinder

Yes, it is designed specifically for that. The Sidewinder features a unique technical fit that allows you to roll and shift without the bag twisting around you, and it includes body-mapped padding to relieve pressure on your hips and knees.

The bag combines 650-fill down with synthetic insulation. This hybrid approach gives you the high-loft warmth of down while using synthetic padding in high-pressure areas to ensure you stay warm even when the insulation is compressed against your body.

The Sidewinder is rated for 20 degrees Fahrenheit. While this is a solid three-season rating, keep in mind that individual warmth varies; if you tend to sleep cold, you may want to pair it with a high-R-value sleeping pad.

Not at all. The hood is designed to move with your head rather than staying static, which keeps the insulation close to your face to trap heat without making you feel claustrophobic or trapped.

Yes, the bag features a dedicated internal pillow sleeve. It keeps your pillow secure and in place throughout the night, so you aren't waking up to chase it around the tent.

It weighs 2.44 lbs and compresses down to 8 liters. It is a reasonable weight for backpacking, though not ultralight, and it packs down small enough to fit easily into most standard hiking packs.