Therm-a-Rest NeoAir XTherm NXT Sleeping Mat Regular Wide Neptune

Ultralight and compact, regular wide size, tapered rectangular sleeping mat designed for cold-weather backcountry use.

Created for those who demand ultralight performance without compromising warmth, the Therm-a-Rest NeoAir XTherm NXT Sleeping Mat is purpose-built for cold-weather expeditions, alpine pursuits, and minimalist backcountry travel. Featuring Refined Triangular Core Matrix construction combined with ThermaCapture Technology, this mat offers an exceptional 7.3 R-Value—making it one of the warmest air pads in its class. With a 7.6cm thick profile and horizontal baffles, it provides excellent support and stability throughout the night, ensuring restful sleep in the harshest environments. The WingLock Valve system enables rapid one-way inflation and deflation and its durable yet lightweight build ensures resilience through extended use. Despite its powerful insulation and rugged construction, the mat remains ultralight and compact, packing down easily for efficient transport in alpine packs. Whether you're winter camping or taking on technical summits, the XTherm NXT delivers warmth-to-weight performance.

Key Features:

Refined Triangular Core Matrix construction: For stability and unmatched warmth-to-weight ratio.
ThermaCapture Technology: Traps radiant body heat for superior thermal efficiency.
7.3 R-Value: Offers high-level insulation suitable for sub-zero conditions, making it ideal for alpine and winter expeditions where reliable thermal performance is critical.
7.6cm Thick with horizontal baffled structure: For improved comfort and sleep stability.
WingLock Valve: Allows for fast inflation/deflation and easy micro-adjustments.
Regular Wide size: 183cm length x 64cm width x 7.6cm thick
Tapered rectangular shape: For less weight and packing space.
Ultralight and Durable: Only 540g, built with a robust 70D nylon bottom for abrasion resistance and a lightweight 30D ripstop nylon top to maintain packability without sacrificing toughness.
Inclusions: Comes with a pump sack, a stuff Sack, and a field repair kit.

Brand : Therm-a-Rest

Model # : S218-14016

Barcode : 40818140161

Gender : Womens

Gender : Unisex

Gender : Mens

Shape : Tapered Rectangular

Self-Inflating : No

R-Value : 7.3

Weight : 540g

Mat Dimensions ( L x W x T) : 183 x 64 x 7.6cm

Packed Dimensions : 28 x 13cm

Top Fabric Material : 30 Denier ripstop High Tenacity Nylon

Bottom Fabric Material : 70 Denier Nylon

Other Fabric Material : Nylon, Polyurethane

Shipping Options

Free shipping on orders over $100 to Australia & NZ*

Shipping on small orders (under $100) only $9.95

Express shipping to Australia & NZ only $15

Standard Shipping (AU/NZ) – FREE on orders over $100 and $9.95 on orders under $100. Orders are dispatched within 1 business day. Click here for shipping delivery times

Select ‘Standard Shipping – Auspost Only’ if you would prefer your parcel is sent with Auspost. Otherwise it will be shipped with any of our available carriers. Auspost Only shipping is not available on some very heavy/bulky orders.

Express Shipping (AU/NZ) – Need it faster? Express Shipping is available for $15. Express Shipping is not available on heavy/bulky orders. Orders placed before midday on business days are usually dispatched same day (otherwise within 1 business day). Delivery times in the table below.

Click and Collect – Shop online and collect in our Milton, Brisbane store, free for all orders. Orders are usually ready within 2 hours (during opening hours). Click here for address and opening hours.

Terms and conditions apply, click here for a full overview of our shipping policies

Manufacturing defects covered, replaced or repaired.

Returns and Warranties at a Glance:

If you have selected the wrong product/size for you, or want to exchange/return for any reason except for warranty or our error, this is referred to as a 'change of mind' return.
Not all products are eligible for change of mind returns (click here for excluded products). Final Clearance products are not eligible for change of mind returns.
Once you submit a Return Request, we will provide return instructions via email (along with a prepaid return label if applicable). Please wait to receive this before returning any items (Try 2 Anything excluded)
Change of mind returns can be resolved by your choice of exchange, full store credit, or a refund. Refunds are subject to a $19.95 admin fee.

For a full overview of our returns and warranty policies, see Returns and Warranties