Sea To Summit - Spark SpI Ultralight Sleeping Bag 40D

More Views

Sea To Summit - Spark SpI Ultralight Sleeping Bag 40D
Price From: $359.00

Availability: In stock

Stock #: HO3MZ-
Free shipping on orders over $49 Learn More

    Shipping Information

    Free economy shipping on orders over $49:

    Free economy-shipped orders will be shipped by the most appropriate method for their size and destination, and will be delivered within 5 to 10 business days.

    Some Restrictions Apply:

    • Oversized items (bikes, crash pads, large sleds, car racks and cargo boxes, etc.) do not qualify for free shipping.
    • Orders shipped to Alaska, Hawaii, Puerto Rico, Canada or anywhere else outside of the lower 48 states do not qualify for free shipping.

    Read more about our shipping policies here.

* Required Fields


The Spark™ Ultralight Sleeping Bag uses premium materials and no-frills design to provide cutting-edge performance for the designed end-use. Ultralight does not mean ultra-tight: The Spark sleeping bags are snug but still have adequate girth for the performance-oriented backcountry user.


  • ULTRA-DRY Down 850+ Loft 90% Down Cluster Premium Goose Down certified Responsible Down Standard (RDS)
  • 10D shell and 7D liner materials help to achieve the incredible lightweight and compact packed size
  • Includes lightweight Ultra-Sil™ compression bag and storage cell
  • Zipper-length trimmed to 1/3 length for gram-saving performance
  • Sewn-through baffle construction

Additional Information

Year Spring 2019
Material Ultralight 10D Nylon Shell
Insulation Ultra-Dry Down 850+ Loft
Temp Rating 40°F / 4°C
Length Regular: fits to 6'
Long: fits to 6'4"
Shoulder Girth Regular: 58"
Long: 60"
Hip Girth Regular: 50"
Long: 52"
Foot Girth Regular: 35"
Long: 38"
Packed Size Regular: 1.5 L
Long: 2 L
Weight Regular: 12 oz
Long: 14 oz


Write Your Own Review

You're reviewing: Sea To Summit - Spark SpI Ultralight Sleeping Bag 40D

How do you rate this product? *

1 1 star
2 2 star
3 3 star
4 4 star
5 5 star