One Planet Summit -5 Synthetic Bag (1085 Grams)

The Summit Synthetic series is robust, easy to look after and warm even when damp. Designed for entry level walkers, general camping and outdoor education students, this affordable synthetic sleeping bag has a focus on low weight and compact pack size. It’s available in two temperature ratings: -5 M ( 1 F) °C or -10 M (-4 F) °C ISO 23537.1 lower limit of comfort and three sizes. The tapered shaped and half-moon footbox is complemented by a full-length YKK #5 zip with anti-snag cover. Made from 10 D Vapour Vent V2 fabric, it’s filled with multiple layers of thermally-bonded Thermolink for maximum warmth.

The Summit is the updated version of OESB and SAC sleeping bags. Features

- The tapered roomy shape offers versatility and comfort without restricting movement
- A half-moon shaped foot-box is wide, comfy and cosy
- Thermolink insulation uses hollow-core fibres and thermal bonding for excellent warmth-to-weight and durability
- Contoured hood cinches tight to trap warmth around your head while leaving space for the nose and mouth
- A draught tube along the zip insulates the zipper area, keeping warmth in.
- Full-length side zip from hood to ankle: a YKK #5 with locking slider and innovative, anti-snag cover. (This zip allows it to be easily opened from the ankle for effective venting) Specifications

Intended use: bushwalking, camping, travel

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

Available sizes: small (-5), regular (-5, -10), large (-5, -10)

Fill: Thermolink in multiple, thermally-bonded layers

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

Zip configuration: full-length zip

Fabric: 10-denier Vapour Vent V2. Highly breathable, with non PFC water-repellent treatment

Compression stuff sack: included

HOW WARM WILL I BE?

ISO 23537-1 temperature testing provides a temperature limit at which a “standard male" or “standard female" will sleep in thermal equilibrium (have a comfortable night’s sleep).

Both the ‘standard male’ and ‘standard female’ are based on a 25-year-old who is fit and healthy. If you’re older or younger, you may sleep colder than the ‘standard’, so we would recommend considering a warmer bag. Your other equipment (sleeping mat, pillow, tent style) the environment (weather, location) and your biology can affect warmth over the night. THE IMPORTANCE OF INDEPENDENT ISO 23537-1 TESTING

Each ONE PLANET OESB synthetic sleeping bag is temperature rated in accordance with the International Organisation for Standardisation 23537-1 (Requirements for sleeping bags). This is the only globally recognised standard for the temperature testing of sleeping bags, and gives ratings for both females and males. Testing sleeping bags to ISO 23527-1 allows users to make informed, educated and accurate decisions.

The ISO 23537-1 testing methods allows objective comparisons of the warmth of different shapes (Box foot, Zip foot), sizes (small, regular and large), fill quality (synthetic fill, 700 down fill power or 800 down fill power), construction and design.

Not all manufacturers test to this standard, nor do they give information about how they arrive at their temperature ratings. As a result, care should be taken when comparing claims of warmth.

THERMOLINK

Thermolink synthetic fill is light and warm, incredibly durable, and naturally hypoallergenic. It is made up of multiple thermally-bonded layers, making it strong, giving it class-leading warmth-to-weight, and eliminating the need for sewn-through stitching (and the accompanying heat loss). The inner layer is made up of fine, soft fibres that contour to the body. The middle layer uses larger hollow fibre for loft and insulation, with a thermal barrier made up of high-density fibre on the outside. WARM WHEN WET

The insulative qualities of Thermolink fibres are not affected by moisture, so the ONE PLANET OESB synthetic sleeping bag will keep you warm even when wet. Inside each synthetic ONE PLANET bag are thousands of Thermolink hollow-core fibres, each of which has been heat-sealed at both ends, creating pockets of air within each fibre. These pockets trap warmth even when the sleeping bag is saturated, keeping you cosy all night long. BAFFLE-LESS CONSTRUCTION

Thermolink fibres are thermally bonded to form structural sheets. We craft these into sleeping bags by shaping them into sleeping bag forms.

The thermal bonding of the fibres keeps the fill securely in place without baffles. This improves insulation and warmth and reduces overall bag weight, creating a product that performs better and lasts longer. Cleaning is simple: Thermolink is very durable and can be washed in any stand