Sunbeam 0˚

Women's lightweight synthetic fill Big Agnes System bags designed to excel in all conditions

Big Agnes System bags with FireLine™ ECO synthetic insulation offer a roomy, rectangle-shaped sleeping space with an integrated Flex Pad Sleeve on the bottom. With technical fabrics and construction, 100% recycled, super-warm insulation, and tons of comfort features, these comfortable sleeping bags are designed to be lightweight enough for backpacking but cozy enough you'll want them in the campground too. The contoured silhouette drapes the lofty insulation around your body preventing common cold spots, and Flow™ construction increases the thermal efficiency keeping you warm from head to roomy footbox. The Flex Pad Sleeve unites easily with your pad, and as you change positions over the course of the night, will keep you from rolling off your pad.
$199.95 to $209.95
100% Guarantee


Our top priority is to provide customer service as stellar as the award-winning products we create. If one of our products does not perform to your satisfaction, contact our customer service team and we will help you find gear that fits your needs.
Sunbeam Series

Specs + Sizing

Bag WeightPetite: 3lb 15oz / 1.79kg / Regular: 4lb 6oz / 1.98kg
Fill WeightPetite: 49oz / 1.39g / Regular: 55oz / 1.56g
Compressed Bag SizePetite: 8.5" x 9.5" / 22 x 24cm / Regular: 8.5" x 10.5" / 22 x 27cm
Stuff Sack SizePetite: XL 10" x 21" / XL 25 x 53cm / Regular: XL 10" x 21" / XL 25 x 53cm


The Big Agnes System bags offer technical, roomy sleeping spaces for those who aren't willing to sacrifice comfort or packability

Our women's bags are designed to drape and contour to your figure for the most thermally efficient and comfortable night's sleep

Streamlined silhouette with ample insulation for women's specific thermal regulation

Flex Pad Sleeve features stretch construction that accommodates multiple pad widths, and easily connects your bag to your pad  

Petite and Regular bags fit 20" - 25" wide pads

Free Range Hood gives you the freedom to lift your head. Jacket-style hood opening contours to the shape of your face for a comfortable, snug fit

Low-profile cordlock lets you un-cinch the hood with one hand

Pillow Barn – keeps your pillow tucked in tight all night

Internal hood drawcord gives you a secure, cozy fit when cinched

Free Range Footbox -  creates wiggle room for your feet

Rectangular shaped bag

Anti-snag zipper for a smooth, quick zip 

Petite: 60" / 152cm YKK #5 anti snag locking zipper

Regular: 65" / 165cm YKK #5 anti snag locking zipper

Zipper Garage
Mate together left and right zip bags

No-draft collar, no-draft wedge, no-draft zipper

Interior fabric loops for sleeping bag liners

Exterior loops for hang drying or storage

Mesh storage sack & polyester ripstop stuff sack

Construction + Materials

Nylon ripstop shell fabric with a water repellent finish

Soft, cozy polyester lining

FireLine™ ECO Synthetic Insulation - 100% post-consumer recycled polyester. Features low-denier fibers that are tightly woven and provide high loft, compressibility, high weight-to-warmth ratio, and durability


Here’s what other people think.

What’s in a Name?

Sunbeam, CO stands as an unincorporated community in northwestern Colorado between Craig, CO and the Utah border. A post office called Sunbeam was established in 1912 and remained in operation until 1942. The community was named for the ample sunshine received at the townsite.