Aerie 0° to 45°F Underquilt / Sleeping Bags

• Most Versatile Bag Available: With 5 different uses for the Aerie, it's always useful.

• Lightest Weight Materials: featuring our lightest weight fabrics and highest quality insulation. Just imagine the warmth when temperatures drop without packing more weight or bulk!

• Optimizing Baffle Design: the baffle design locks the insulation into place so that you never have colds spots and sleep warm and comfortable all night!

• Your Choice Of Insulation Type: Choose between our DWR coated StormLoft 800-Fill Power down, or our Hybrid LoftTek insulation and stay warm and confident in your gear whatever the circumstances!

• Small In Your Pack: not only will your back thank you for choosing premium ultralight materials, but these materials also compress smaller taking up less space in your backpack!

• Outdoor Vitals Performance Promise : Here at Outdoor Vitals we believe in standing behind the craftsmanship and quality of our products. Anything that was our fault, we fix so you can feel confident that you are getting exactly what you paid for!