One Planet Sac -1 (1000 Grams)

• Tapered rectangular shape offers versatility and roomy comfort for the SAC synthetic sleeping bag
• Thermolink insulation uses hollow-core fibres and thermal bonding for excellent warmth-to-weight and durability
• The half-moon foot-box is wide and cosy, while base draft tubes keep you warm and toasty
• The contoured hood encloses your head, cinching tight while leaving enough space for your nose and mouth
• The elasticised 3D neck baffle effectively traps warmth around the neck and shoulders
• Full-length side zip from shoulder to ankle, with independent zip along the bottom of bag. Both are YKK #5 zips with locking sliders and innovative, anti-snag covers
• Independent zip on the foot (from ankle to ankle) can be opened fully for extra ventilation
• The two zips meet above the ankle, with a 10 cm crossover to keep draughts out
• Selecting azip side is easy: when lying in a sleeping bag, a left-hand zip (LH) is on your left side
• Joined at the zip: full-length zips allow models with compatible left and right zips to be zipped together

Specifications

Fill: Thermolink Synthetic
Comfort Rating: 4°C
Limit of Comfort: -1°C
Extreme: -16°C
Weight: Regular 1000G, Large 1110G
User Height: Regular 187cm, Large 195cm
Shoulder circumference: Regular 160cm, Large 175cm
Stuff sac size (Uncompressed): All sizes 7L (18 x 28cm)

Intended use: bushwalking, camping, travel

Temperature rating: independently tested in accordance with ISO 23537-1

Available sizes: regular, large

Shape: tapered rectangular

Fill: Thermolink in multiple, thermally-bonded layers

Zip: YKK #5 with locking slider and anti-snag cover

Zip configuration: full-length zip with separate ankle-to-ankle foot zip

Zip side: regular with RH or LH, large with LH
When lying on your back in a sleeping bag: a left or LH zipper is on your left side, a right or RH is on your right side.

Zip pull: glows in the dark

Shell fabric: 20-denier Vapour Vent V2. Highly breathable, with a Non PFC water-repellent treatment

Lining fabric: 20-denier Vapour Vent V2. Highly breathable, with a non PFC water-repellent treatment

Booster compatible: Quest series boosters (view instructions)

Compression stuff sack: included

Storage bag: not included

Hanging loops: Yes, located at the footbox

Temp Ratings

One Planet sleeping bags are rated using the international standard for sleeping bag performance, ISO 23537-1. (This is a revised version of European Standard EN 13537.) This means every sleeping bag has two ‘real world’ and one extreme rating. To determine what temperature might be most suitable for you see our technical pages.

• ‘Comfort’ rating is based on a ‘standard’ woman having a comfortable night’s sleep.
• ‘Limit of comfort’ is based on the lowest temperature at which a ‘standard’ man is deemed to be able to have a comfortable night’s sleep. This is the figure we use in our product descriptions.
• ‘Extreme’ rating is a survival rating for a ‘standard’ woman. According to ISO 23537-1, ‘a strong sensation of cold has to be expected and there is a risk of health damage due to hypothermia’. This is a survival rating only, and consumers should not rely on this rating for general use. The best guidelines are the comfort and limit of comfort ratings.

Thermolink

This bonded fibre weighs less and packs down smaller than competing synthetic fills, making our bags lighter and more compact while maintaining comfort and durability. The secret is in the manufacturing process: thousands of hollow fibres are sandwiched between a high-density thermal barrier and a fine, soft, body-conforming radiant retention layer to form one continuous sheet of Thermolink fibre. As it is one continuous layer, there aren’t any gaps for heat to escape, leading to better performance than traditional baffled fills.