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Ultra-Sil Nano Shopping Bag

Reusable eco-friendly shopping bag


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.



The Ultra-Sil™ Nano™Shopping Bag is constructed using lightweight 15 denier siliconized nylon. Its generous 25L capacity is reinforced by bar-tacks so it easily supports loads in excess of 45 lbs / 20kg—a lot more than you’ll comfortably carry over your shoulder! This tiny reusable shopping bag is amazingly strong and durable. We've also made sure that the stress points have bar-tacked reinforced stitching. You can fill these shopping bags to capacity week in, week out and they will keep performing like new.

Because the Ultra-Sil™ Nano™ Shopping Bag is so compact and lightweight you can stash it anywhere - the tiny packed size clips easily onto a key ring, a carabiner, or tucks in a purse or in a jacket pocket, so you never have it out of reach.

Is the Ultra-Sil Nano Shopping Bag…?

  • Good for travel? Yes – it’s always handy to have a bag with you for unanticipated loads. For regular use while traveling, you might consider the Ultra-Sil Daypack.

  • Available with a zip-closure or change pocket? No – a zipper would increase the packed size. As it is, the Ultra-Sil Nano Shopping Bag is tiny.

  • Machine washable? Yes, if you experience a grocery spill inside the Nano Shopping Bag, the bag can be machine washed.


  • Ultralight 15 denier high strength, siliconized Nylon Nano™ fabric
  • Siliconized Nylon Nano™ fabric slippery finish for easy packing
  • Water-resistant 
  • Bar-tacks at stress points for added strength

Technical Features

15D Ultra-Sil®

One of the lightest coated fabrics that Sea to Summit manufactures, the 15 Denier Ultra-Sil is a siliconized nylon fabric with a polyurethane (PU) inner coating for mild waterproofing. This ultralight fabric has a 1,200mm hydrostatic head.

Tech Specs

Product Details

Best Use
Groceries, Shopping
15D siliconized Nylon nano fabric
Water-resistant Material
25L / 6.5 Gal
14 x 17.5 in / 35 x 44 cm
2.7 x 1.9 x 1.8 in / 6.8 x 4.8 x 4.6 cm
1oz / 30g


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