Big Agnes | Echo Park 40°F


Sale price$179.95

Shipping calculated at checkout

Fill: Synthetic
Temp. Rating: 40°
Only 1 unit left


Big Agnes | Echo Park 40°

Why Moto Camp Nerd carries this bag? It's the synthetic version of our best selling sleeping bag, the Diamond Park.  Not everyone can use a down sleeping bag and others prefer synthetic, so we added this one to our lineup.

Synthetic-fill, spacious Big Agnes system bag with removable quilt cover

Echo Park Series synthetic bags are cut tall and wide, ideal for campers of a larger stature, barrel-chested strong men, or for folks who just want more room to move around at night. Ideal for hunting camps, base camping, or road-tripping. Slip one of our 25 or 30-inch wide pads into these Big Agnes System bags, which utilize our Flex Pad Sleeve design. With double zippers that zip completely off to create a comforter affect, or zip together into a mummy bag with the Park Series Wedgie, plus top corner hand pockets that feel just like your comforter at home, the Park bags’ unique quilt-like construction turns your bag into a backcountry bed. So comfortable, you won’t want to go home!

If you want the ability to zip off the top to use as a mummy, buy the Park Bag Wedgie HERE

The stuff sack included is 15x7.5" and is about 13 liters. 

For compression sacks we recommend using one of these:

Snugpak Compression Bag M Here
Sea to Summit 13L Dry Compression bag HERE
EXPED TeleCompression S HERE
EXPED Side Compression S HERE

Fits people up to 6'6" tall


  • No-draft wedge, no-draft zipper
  • Flex Pad Sleeve features stretch construction that accommodates multiple pad widths, and easily connects your bag to your pad 
  • Pillow stays in place throughout the night with integrated Pillow Barn 
  • Double zippers allow entry from either side of bag and when unzipped allows top of bag to be used like a comforter
  • Low-profile cordlock lets you un-cinch the head opening with one hand
  • Park bags mate easily 
  • Internal mesh stash pocket for phones and other little ditties 
  • Interior fabric loops for sleeping bag liners
  • Exterior loops for hang drying or storage
  • Storage sack & stuff sack included 
  • Accessory Park Bag Wedgie - Sold Separately


Echo Park 40°
Total Weight: 3lb 2oz
Fill Type: FireLine™ Max
Total Fill Weight: 16oz
Compressed Bag Size: 
(compression bag not included)
8" x 6.5"
Stuff Sack Size: 7.5" x 15"
Max User Height: 6' 6"
Recommended Pad Size: 25" - 30" x 78"
Shoulder Girth: 80"
Hip Girth: 74"
Foot Girth: 64"


  • Nylon ripstop shell fabric with a water repellent finish 
  • Cozy cotton/polyester lining
  • FireLine™ MAX Synthetic Insulation
  • Imported

Made in China

Synthetic Sleeping Bag Care


Keep your bag hanging if possible, or in its included mesh storage sack
Store in a cool, dry place away from heat sources


Even dirtbags wash their bags!
Machine wash in a washing machine WITHOUT AN AGITATOR, agitators are likely to cause damage to your gear
Oversized bags require oversized machines, you may need to go to a laundromat to wash your larger bags
Wash on a warm, gentle cycle
Use gear specific soap, we recommend Nikwax Tech Wash
Tumble dry low heat

Do not use fabric softeners
Do not bleach
Do not iron
Do not dry clean

Repairs and Warranty:

All Big Agnes gear is guaranteed against manufacturing or material defect. We do not warranty products damaged from normal wear and tear, alteration made by owner, misuse, accidents, or damages caused by uses other than intended. Damage due to misuse, normal wear and tear, or improper care may be repaired, at the discretion of Big Agnes, at a reasonable charge. Gear returned for repair must be clean and free of debris.

Questions? Call Big Agnes or open a support case:
877.554.8975 |

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