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Barrier Face Mask

Breathable, secure & reusable


Sleeping Bag Temperature Ratings Explained

The EN Rating scale is a scientific test to determine the warmth of a sleeping bag. The test produces a Lower rating (for male sleepers) and a Comfort rating (for female sleepers). Both are listed in the features table on the product page.

A unisex sleeping bag with a Lower limit of 14ºF means a man should be comfortable down to air temperatures of 14ºF. The same bag will also have a Comfort limit, in the realm of 27°F, so a woman would be comfortable down to an air temperature of 27ºF. These ratings require 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.

A variety of factors impact sleeping bag warmth - the above temperatures are merely guidelines, not guarantees. It’s important to think of a sleeping bag, an appropriately insulating sleeping pad and a liner as a sleep system. For example - 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, plus a sleeping mat with an R-Value of 2.5 to 3, and consider a Reactor thermal liner.


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Made with soft, breathable fabric the Sea to Summit Face Mask is a comfortable, washable and reusable barrier against the transmission of airborne droplets.

Comfortable by design, this mask provides full nose and mouth coverage and the elasticized ear loops keep the mask securely in place. The mask is made with brushed and quilted 50D polyester stretch-knit fabric that is thermoformed and seamless for a snug, contoured fit. Highly breathable and weighing only .35oz / 10g, this mask feels light on your face and is equally comfortable to wear for short trips to the store or longer commutes and extended travel. To re-use, simply machine wash at 140°F / 60°C and dry.

This mask is not a medically graded mask nor Personal Protective Equipment.


  • Soft brushed breathable 50D stretch-knit fabric
  • Thermoformed seamless profile for a comfortable fit
  • Elasticized earloops for secure positioning
  • Quilted three-layer construction
  • Machine washable at 140°F / 60°C and reusable
  • Three colors & three sizes to fit the whole family
  • For non-medical use

Choosing Your Size

Using a ruler, measure from the base of your chin to the bridge of your nose. Based on this measurement, choose the appropriate size:

  • 3.1in or lower – EXTRA SMALL size (for Children)
  • Between 3.1 and 4.7in – SMALL size (typically Women & Youth)
  • 4.75in inches or higher – REGULAR size (typically Men)

Tech Specs

5.7 x 6.7 x 6.7 in
5.7 x 5.1 x 0.24 in
.35oz / 10g
5.7 x 6.3 x 6.3 in
5.7 x 5.1 x 0.24 in
.35oz / 10g
4.7 x 4.13 x 4.13 in
5.7 x 5.1 x 0.24 in
.35oz / 10g


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