Sierra Designs Shut Eye 20° Degree Synthetic Sleeping Bag - Green

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Size: Reg

When it comes to camping, your best sleep system starts from the ground up. Lightweight and compact, the Shadow Mountain Air Pad is designed to keep you off the ground, with an efficient baffle pattern that helps distribute your weight evenly and stabilizes your body and back with the foundation it needs for a great night’s sleep. A one-way valve prevents air loss when inflating, and our Burrito Bag storage makes it easy to stash and dash when it’s time to pack and go.


  • 20D polyester ripstop shell, 20D polyester taffeta liner makes for a durable exterior and a soft as butter interior.
  • Adjustable hood cinch for additional protection when the temps drop
  • Anti-snag zipper for easy use
  • Hand pocket to use bag like a blanket for bed-like comfort
  • ISO Tested
  • Stuff sack included for easy pack up and transport


Temperature Rating

  • Temperature Rating: 20°F / -6.67°C
  • ISO Comfort Temp Rating: 34°F / 1.11°C
  • ISO Limit Temp Rating: 23°F / -5°C

Regular Specs

  • Weight: 1266g (excludes storage bags)
  • Fill Weight: 34 oz / 963.88 g
  • Fits Up To: 72 in / 183 cm
  • Length: 78 in / 198 cm
  • Shoulder Circumference: 62 in / 157 cm
  • Hip Circumference: 56 in / 142 cm
  • Footbox Circumference: 40 in / 102 cm
  • Stuff Sack Size (L x W): 9 x 15 in / 23 x 38cm

Long Specs

  • Weight: g (excludes storage bags)
  • Fill Weight: 35 oz / 992.23 g
  • Fits Up To: 78 in / 198 cm
  • Length: 84 in / 213 cm
  • Shoulder Circumference: 64 in / 163 cm
  • Hip Circumference: 58 in / 147 cm
  • Footbox Circumference: 42 in / 107 cm
  • Stuff Sack Size (L x W): 9 x 15" / 23 x 38cm


  • Insulation: SierraLoft Synthetic
  • Shell Fabric: 20D Polyester
  • Liner Fabric: 20D Polyester Taffeta


Delivery Details

In-stock items are dispatched the same day if ordered before 2pm (Monday - Friday) or the next working day if ordered after 2pm or on a weekend.

Deliveries are normally next working day for orders over £60. If under £60, we sometimes use a 48 hour service. You will have the option to upgrade to a next day service at the checkout.

Special Order items are dispatched within the timescales displayed after selecting your size.

Most orders are dispatched using DPD Next Working Day.

We use Royal Mail 24 for the more remote parts of Scotland, the Channel Islands and Northern Ireland. Please allow a little extra time for delivery in these areas.

For orders under £60, we normally dispatch using Royal Mail 48 with delivery being made in 2 to 3 days. You will have the option to upgrade to a next day service in the checkout.

A tracking number will be emailed to you for all orders over £60 on the day of dispatch.

For orders under £60 dispatched using an untracked economy service, a reference number will be emailed, but you will not get full tracking, only confirmation once delivery has been attempted.

Other Questions

Sometimes you will see 'Special Order' when selecting your size. For these items, we will dispatch once we have received them from our supplier.

An estimated lead time will be displayed for Special Order items.

Yes, returns are accepted within 30 days of purchase so long as it is unused and still in it's original packaging*.

You can return for an exchange or refund.

Refunds are carried out immediately after receiving your item back. Return postage is at your own cost.

* for safety reasons, we do not accept the return of climbing equipment or underwear once it has been tried on.

All items sold come with a minimum 12 month warranty that covers defects in materials or workmanship.

Certain brands offer an additional warranty. You can find this information on the brands own website, or you can contact us for additional information.

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