The Specialist Shelters

$300.30 – $349.30


Sleeping Bag Temperature Ratings Explained

The EN Rating scale is a scientific test to determine the warmth of a sleeping bag. Unisex sleeping bags list the Lower Limit which is the lowest temperature rating that an average male sleeper would be comfortable in. Our women’s sleeping bags list the Comfort Limit, which is the lowest temperature rating at which an average female sleeper should be comfortable. The comfort and lower limit temperature ratings are listed in the features table on the product page.

For example, a unisex sleeping bag that shows a Lower limit of 23ºF means a man should be comfortable down to air temperatures of 23ºF. The same bag will also have a Comfort limit, in the realm of 32°F, so a woman would be comfortable down to an air temperature of 32ºF. Men and women should always sleep in a layer of long underwear and use a sleeping mat with an R-Value appropriate for expected ground temperatures – without this, the sleeping bag itself is unlikely to keep the sleeper warm enough.

Here’s a basic categorization of appropriate use, based on rated temperatures:
Summer:   >+35ºF / +3°C
3-Season:   +10 to +35ºF / -15° to 0°C
Winter:   <10ºF / -15°C

A huge variety of factors can impact sleeping bag warmth - the above temperatures are merely guidelines, not guarantees. It’s important to think of a sleeping bag as one element in a sleep system which also includes an appropriately insulating sleeping pad and a liner. For instance - if you plan on sleeping in nighttime air temperatures of 27ºF / -3°C, choose a bag with a gender-appropriate rating of 23°F / -5°C nights, plus a sleeping mat with an R-Value of 2.5 to 3, and consider a Reactor thermal liner. If you have any questions about which temperature sleeping bag / R-Value sleeping mat you should select, or how to improve your warmth in a sleep system, reach out to us via our contact page any time.

$429.00 $300.30

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The Specialist™ Shelters are for technically minded ultralight adventurers. These extremely lightweight shelters have features such as built-in mosquito doors and vestibules, with a lower overall weight and compact size than many bivys. The Specialist is the lightest fully enclosed, seam-sealed shelter in its class. A Specialist can be pitched quickly and provide protection against inclement weather and bugs.


  • Ultra-lightweight
  • Canopy is made with Pertex® Endurance 20D nylon that has a 1,000mm hydrostatic head and a 7000MVTR (Moisture Vapor Transmission Rate)
  • Vestibule & floor are made of 15D Ultra-Sil™ Nano™ with 1,200mm hydrostatic head
  • Double stitched and bar-tacked at all stress points
  • Fully taped seam sealed and reflective guy lines
  • Includes 2 x 7075 alloy poles and 6 x hard anodized 7075 alloy pegs
  • Can be pitched with a pair of trekking poles and natural anchors for extra weight savings
  • Ultra-fine mesh panel doors

Use Guide

  • Tyvek® lightweight groundsheet sold separately – recommended for boggy or rocky ground
  • The Specialist should be pitched in locations where natural cover offers some protection from heavy, wind-driven rain

Size Guide

  • The Solo has one entrance and one vestibule.
  • The Duo has two entrances and two vestibules

Item cannot be purchased in Canada,CA,LA,MA,MI,MN,NJ,NY