SEA TO SUMMIT®
Talus 1 ATS-1 Down Sleeping Bag
Possibly one of the best sleeping bags Sea To Summit® ever made, The Talus series delivered high performance and loads of features at a very reasonable price. Offering some of the best warmth-to-weight sleeping bags, the Talus series’ classic relaxed mummy design also incorporates many innovative and comfort enhancing features.
The hood is designed to completely cocoon your head in a way that maximises the available loft without making it feel claustrophobic. There is an adjustable collar to help fine-tune your temperature control, and both its draw cord channel and that of the hood, are buried deep within the down so there are no harsh exposed edges. There is a discreet zippered pocket for your phone, power bank or valuables, and the main zipper has an anti-snag system that actually works!
The cut of the bag and baffles are engineered so that none of the down is restricted from reaching its maximum loft (and therefore insulation value), a simple principle to state but a surprisingly complex one to render practical. It involves using differentially cut, 3-dimensional sidewalls and curved baffles.
The Talus series uses a Nylon 2D NanoShell™ outer shell fabric, specially engineered to be very breathable yet still manages to have excellent water resistance. Good breathability is essential in minimising condensation of body moisture on the inside of the shell; a problem that over a number of nights can dampen the down filling enough to compromise its insulation value.
The relaxed mummy shape of the Talus is designed to maximise thermal efficiency and minimise overall weight. It is cut with a larger hood, broader shoulder and large chest to provide a comfortable sleeping bag.
Anatomically Tapered Box Foot
The natural position your feet will take when lying flat is relaxed at ease and slightly stretched out. The anatomical cut box foot tapers in three directions. There is vertical taper from the toe to the heal creating a slant that matches the relaxed form of your feet. Along the outer edge of your foot there is a trapezoidal taper that provides a form fit, keeping down close to your extremities so they don’t get frostbite. From the top view, there is an outward taper from the ankles to the feet. This creates room for your toes to have great circulation and traps warmth in the foot box.
Hood Design
The Traverse series uses 3D compound differential cut patterning, this forms a shape that naturally traps warmth were it is most essential.
Internal Drawcords
Around the perimeter of the hood an internally constructed drawcord tunnel ensures the cord is buried deep within the down. When drawn closed the hood forms a comfortable seal around your face. A low profile Nifco dual cord adjuster is used for comfort and durability, offering a versatile fit. The hood closure uses a non-stretch cord for refined adjustment, while the neck collar uses an elastic cord to stretch with you as you move in the bag.
Zips
All Sea to Summit sleeping bags use YKK® zips. The Traverse series uses YKK® #5 reverse zips, this allows you to un-zip the sleeping bag from top and bottom for temperature regulation. Alpine, Traverse and Trek bags are fitted with a fixed zip length for all sizes. These bags can be zippered together in any combination of model and size.
Anti-Snag Zip System
Neatly hidden in the draft tube is a super high-density 210D poly cloth. This fabric is exceptionally stiff and was originally engineered for use in high performance race sails. The lightweight, durable, stiff finish provides an excellent zipper anti-snag.
Fabrics, Filling & Care
The NanoShell™ Face Fabric:
The NanoShell Face is used on both the 2D NanoShell and 3D NanoShell systems. This face fabric is a high-density weave, 20 denier polyester ripstop with a Nano DWR finish. The Nano DWR is a surface treatment that makes the fabric extremely water repellent, without compromising breathability. Nano DWR is much more durable than standard DWR as it uses nano sized particles of water repellent to treat the fabric. These very small particles can attach to the fabric fibres in much greater quantity and adhere better, therefore lasting longer.
Dimensions (Regular):
Dimensions (Long):
ULTRA-DRY Down is a permanent* Nano-level water repellent polymer
treatment applied to our high loft, high quality down. The Nano-thin
treatment vastly improves our downs reaction to water without effecting
its weight or loft performance. ULTRA-DRY Down retains over 60% more
loft and absorbs 30% less moisture when compared with untreated down.
Sea to Summit sleeping bags dry out 60% faster than bags with untreated
down.
The Nano-level treatment also inhibits bacterial and microbial growth,
which makes Sea to Summit sleeping bags more hygienic and improves their
lifespan.
*No loss of treatment effect has been seen in over 14 wash cycles.
About EN13537 Temperature Rating System:
Although the EN13537 standard does not identify a single precise
temperature a tested sleeping bag is suitable for, it does provide an
industry standardised temperature range that a typical user can refer to
as a guide for the conditions their bag will be most comfortable in.
The EN13537 standard provides three temperature levels to guide a consumer in their choice:
The EN13537 temperature tests use a thermal manikin with heaters and temperature sensors to measure the insulation value of a sleeping bag. This manikin is wearing one layer of long underwear and is placed inside the sleeping bag on an insulating mat. The test is conducted in a temperature controlled chamber and a range of comfort temperatures are derived from measuring the energy required to maintain homeostasis in the manikin to a set temperature.
All Sea to Summit sleeping bags have been tested to the EN13537 standard. We recommend you use our EN13537 quoted ratings as a guide and a comparative reference to other EN13537 tested bags.