Sea to Summit Spark Pro Down Sleeping Bag

Sea to Summit Spark Pro Down Sleeping Bag

Sea to Summit

$470.00

$552.00

Save 15%

Temp Rating:

-1C|30F -9C|15F

Size:

Regular Long

Variant

1% for the Planet We'll donate $4.70 from this purchase to environmental charities.

Features

RDS-certified, 900+ fillpower goose down with a non-PFC Ultra-Dry Down treatment for maximum thermal performance
Featherweight 10D nylon shell with non-PFC DWR, and a highly breathable 10D nylon liner for enhanced comfort
Technical hood, anatomical footbox and an ergonomic mummy shape - ultralight doesn't have to mean ultratight
Free Flow Zip System: YKK #5 side zipper with zipper plow for reliable, snag-free operation. YKK #3 footbox and shoulder zipper for minimal additional weight
Baffle construction specific for each use: Hybrid box baffles in torso/sewn through in leg area (-1°C|30°F) or full box baffles for maximum warmth (-9°C|15°F)
Front draft collar is fitted around the neck and oversized at the shoulders to retain warmth
Sea to Summit Guarantee is offered for the Lifetime of this product

Specifications

WEIGHT

-1C|30F R: 619g
-1C|30F L: 672g
-9C|15F R: 784g
-9C|15F L: 861g

CERTIFICATION

RDS - 883003

MATERIAL

Shell: 100% Nylon
Lining: 100% Nylon
Fill: 90/10 Goose Down
Stuff Sack: 100% Nylon - excluding trims

INTERNAL CHEST CIRCUMFERENCE

R: 155cm
L: 165cm

INTERNAL HIP CIRCUMFERENCE

R: 135cm
L: 145cm

INTERNAL FOOT CIRCUMFERENCE

R: 102cm
L: 112cm

PACKED DIMENSIONS

-1C|30F R: 13.5 x 19.5 x 34cm
-1C|30F L: 13.5 x 19.5 x 34cm
-9C|15F R: 15.5 x 22.5 x 41cm
-9C|15F L: 15.5 x 22.5 x 41cm

RECOMMENDED USER HEIGHT

R: 185cm
L: 198cm

INSULATION TYPE

RDS certified, 900+ fillpower goose down with a non-PFC Ultra-Dry Down treatment

COMPRESSION SACK VOLUME/ASTM F1853-11 COMPRESSED VOLUME

-1C|30F R: 8L/5.3L
-1C|30F L: 8L/5.5L
-9C|15F R: 13L/7L
-9C|15F L: 13L/7.7L

Sea to Summit tests all of its sleeping bags according to the ISO 23537 standard. This test presupposes that a sleeper is

dressed in expedition-weight base layers
wearing an insulated cap
using a sleeping mat with an R-Value of 5+

The ISO test produces three temperature ratings, two of which Sea to Summit publishes as above in these specifications.

Sea to Summit publishes the temperature ratings provided by the ISO-certified lab - the figures are not rounded down or altered.
this rating is a guideline, not a guarantee

Factors that can affect performance include air humidity and how well the down is distributed in the baffles (the latter involves vigorously shaking the bag prior to use)

Other factors that affect performance is the physical condition of the sleeper, levels of hydration and fatique.