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Overview

The Sea to Summit Ether Light XR Insulated ASC Sleeping Mat – Large Mummy (78" × 25") is built for backpackers who prioritize warmth, comfort, and space. With a 4.1 R-value and "3.9"-thick air-sprung cells, it offers excellent insulation and support for side or restless sleepers. The ThermalCore insulation retains body heat, while the durable 30/40D nylon shell resists wear.

Sea to Summit Ether Light XR Insulated ASC Sleeping Mat - Large Mummy 78"x25" (ASL051152-061704CA)

Model: ASL051152-061704CA
Web Code: 19416086
Sold and shipped by | 4.5 seller rating (45 reviews)

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Seller Return Policy

Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

• Large mummy size: 78" × 25" for extra comfort

• R-value 4.1 for reliable three-season insulation

• 3.9" thick Air Sprung Cells for plush support

• ThermalCore insulation retains body heat

• Lightweight: approx. 665g (23.5 oz)

• Compact packed size: ~24 × 12 cm

• Includes Airstream pump sack and XPRESS valve

• Durable 30/40D nylon with TPU laminate

• Ideal for backpacking in cool conditions

Product Condition
Brand New
Accessory Type
Other Accessories

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping on all orders.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • British Columbia (Remote)
  • Alberta (Remote)
  • Saskatchewan (Remote)
  • Manitoba (Remote)
  • New Brunswick (Remote)
  • Nova Scotia (Remote)
  • Prince Edward Island (Remote)
  • Newfoundland and Labrador (Remote)
  • Yukon
  • Northwest Territories
  • Nunavut
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
See our return policy to find specific return information for this product and steps on how to return by mail.