Sea to Summit Ether Light XR Regular Rectangular Wide sleeping mat
Sea to Summit Ether Light XR Insulated Sleeping Mat – Small, Dark Grey
Sea to Summit Ether Light XR 10 cm Air Sprung Cell side profile
Sea to Summit Ether Light XR sleeping mat in use
Sea to Summit Ether Light XR integrated Airstream pump sack demonstration
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Sea to Summit Ether Light XR Regular Rectangular Wide sleeping mat
Sea to Summit Ether Light XR Insulated Sleeping Mat – Small, Dark Grey
Sea to Summit Ether Light XR 10 cm Air Sprung Cell side profile
Sea to Summit Ether Light XR sleeping mat in use
Sea to Summit Ether Light XR integrated Airstream pump sack demonstration

Sea to Summit Ether Light XR Insulated Sleeping Mat

$289.00 SALE PRICE 0% OFF
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Size
AU delivery Target Standard: 4–6 FedEx: 3–5 business days* 30-day returns Returns & exchanges Support & FAQs Delivery & warranty

Plush 10 cm comfort, an ASTM-tested R-value of 4.1 and a compact packed size make the Ether Light XR a strong choice for tramping, backpacking and bikepacking across extended three-season conditions.

Sea to Summit's Air Sprung Cell construction supports the body like hundreds of small springs, creating a stable surface that stays comfortable whether you sleep on your back, side or front. Three layers of ThermalCore insulation reflect warmth back towards you while limiting internal air movement, without the bulk of conventional insulation.

Why choose the Ether Light XR?

  • 10 cm of cushioned support: Air Sprung Cells reduce pressure points and provide stable comfort in any sleeping position.
  • Extended three-season warmth: ASTM F3340 tested R-value of 4.1, suitable for conditions where a hard frost may occur.
  • Fast, moisture-conscious inflation: the stuff sack doubles as an Airstream pump sack, while the high-flow XPRESS valve makes inflation, fine adjustment and deflation simple.
  • Smaller and lighter than earlier Ether Light models: easier to carry without giving up the plush feel the range is known for.
  • Built for repeat use: increased weld strength improves durability.
  • PillowLock compatible: included patches help keep a Sea to Summit Aeros pillow in place.

Choose the right size

Size Mat dimensions Mat weight Packed weight Packed size Recommended user height
Small 168 × 55 × 10 cm 445 g 500 g 20.5 × 11 × 11 cm Up to 168 cm
Regular 183 × 55 × 10 cm 470 g 525 g 20.5 × 11 × 11 cm Up to 183 cm
Regular Rectangular Wide 183 × 64 × 10 cm 605 g 665 g 24 × 12 × 12 cm Up to 183 cm
Large 198 × 64 × 10 cm 605 g 665 g 24 × 11.5 × 11.5 cm Up to 198 cm

Shape guide: Small, Regular and Large are tapered to save weight and pack space. Regular Rectangular Wide provides more room through the shoulders and legs.

What's included

  • Stuff sack with integrated Airstream pump sack
  • PillowLock patches
  • Repair kit

Materials and specifications

  • R-value: 4.1 (ASTM F3340 tested)
  • Thickness: 10 cm
  • Mat: 100% nylon
  • Valve: 100% TPU
  • Stuff sack: 100% nylon
  • Treatment: non-PFAS and flame-retardant free

XR or XR Pro?

Choose the Ether Light XR for lower weight and extended three-season use. If winter camping, alpine trips or well-below-freezing ground conditions are on the agenda, consider the Ether Light XR Pro with its R-value of 7.4.

Frequently asked questions

How cold can the Ether Light XR handle?

Sea to Summit describes its R-value of 4.1 as suitable for conditions where a hard frost may occur. Ground temperature, sleeping bag warmth, shelter and the sleeper all affect overall comfort.

Can I inflate it by mouth?

Yes. Mouth inflation generally takes more than 20 breaths, while the integrated pump sack fills the mat in only a few cycles and helps reduce breath condensation inside the mat.

Does it work with Sea to Summit pillows?

Yes. The included PillowLock patches are designed to secure an Aeros pillow and reduce slipping during the night.

Frequently asked questions

Can I return or exchange my order?

Eligible items can be returned within 30 days of purchase, unused with original packaging and labels. Refunds may incur a handling fee; exchanges and store credit avoid it. Return postage is at your cost; conditions apply.

Returns policy
What if I need warranty or repair help?

Contact us before sending anything back, with your order details, photos and a brief description of the issue. We will help with warranty, repair or spare-part options. Coverage varies by product; your consumer rights still apply.

Get warranty help
How long will my order take to arrive?

For in-stock, standard parcels, standard AU shipping targets 4–6 business days after dispatch and FedEx targets 3–5 business days after dispatch. These are targets, not guarantees. Remote and bulky deliveries can take longer. Preorders, public holidays and carrier delays may affect timing. Contact us if you need an item by a specific date.

Delivery information
How much does shipping cost?

Standard AU shipping is $10, or free on eligible orders over $250, excluding heavy or bulky items. FedEx is $25. Product-specific freight charges apply to heavy or bulky items with either service, and remote-area surcharges may apply. Available services and final shipping charges are shown at checkout.

Delivery information
Will I receive tracking details?

Yes, tracking details are sent by email when your order is dispatched. Allow time for the carrier’s first scan. If you cannot find the email, contact us with your order number.

Contact our team

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