Therm-a-Rest NeoAir XTherm NXT vs Big Agnes Zoom UL Insulated

Editorial Team
Last modified at May 24, 2026
Choosing the right sleeping pad can make or break your backpacking experience. A good sleeping pad provides the necessary comfort and insulation to ensure a restful night's sleep after a long day on the trail. In this comparison, we look at two popular options: the Therm-a-Rest NeoAir XTherm NXT and the Big Agnes Zoom UL Insulated. Both pads offer unique features tailored to different backpacking needs, whether you prioritize warmth, comfort, or packability.

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Therm-a-Rest NeoAir XTherm NXTBig Agnes Zoom UL Insulated
Therm-a-Rest NeoAir XTherm NXTZoom UL Insulated
Weight

15.5 oz

14 oz

R-value

7.3

4.3

Thickness

3 in

3.25 in

Dimensions

72 x 20 in

20 x 72 in

Material

30D ripstop nylon top / 70D nylon bottom

Post-consumer recycled nylon ripstop

Warranty

Limited Lifetime

Limited Warranty

Insulation Type

ThermaCapture™

Two layers of heat reflective film

Valve System

WingLock™

Single port, dual-function valve

Size

Large Regular Wide Regular

20" x 72"
25" x 72"
25" x 78"

Baffling Pattern

Horizontal

Honeycomb

Baffle System

Triangular Core Matrix™

O-beam

Fabric Denier

30D top / 70D bottom

20D

Packed Size

9 × 4.5 in; 11 × 5 in wide/large

4 × 8 in

Comfort

Therm-a-Rest NeoAir XTherm NXT

4.6/ 5.0

Zoom UL Insulated

4.6/ 5.0

Comfort is crucial for a good night's sleep, especially after a long day of hiking. A comfortable sleeping pad can make a significant difference in how well-rested you feel the next day. Both the Therm-a-Rest NeoAir XTherm NXT and the Big Agnes Zoom UL Insulated excel in this category, with users praising their pressure-relieving comfort and stable sleep surfaces. The XTherm NXT's horizontal baffles and 3-inch thickness provide excellent support for side sleepers, while the Zoom UL Insulated's quilting baffle design and 3.25-inch height offer a cushy, cloud-like feel. Both pads are designed to relieve pressure points and provide a comfortable sleeping experience. With both products scoring equally high in comfort, the choice comes down to personal preference in sleep surface design.

Warmth

Therm-a-Rest NeoAir XTherm NXT

4.9/ 5.0

Zoom UL Insulated

2.3/ 5.0

Warmth is a critical factor for backpackers camping in cold conditions. A pad with high insulation can mean the difference between a cozy night's sleep and a shivering, restless one. The Therm-a-Rest NeoAir XTherm NXT stands out with its impressive 7.3 R-value and ThermaCapture technology, which reflects body heat back to keep you warm even in sub-freezing conditions. Users consistently report feeling toasty and well-insulated from the cold ground. In contrast, the Big Agnes Zoom UL Insulated, with its 4.3 R-value, struggles to provide the same level of warmth. Many users find it insufficient for temperatures below freezing, often feeling the cold seep through. For cold-weather camping, the XTherm NXT is the clear winner in warmth.

Durability

Therm-a-Rest NeoAir XTherm NXT

4.1/ 5.0

Zoom UL Insulated

3.2/ 5.0

Durability ensures your sleeping pad can withstand the rigors of backcountry use without frequent repairs or replacements. The Therm-a-Rest NeoAir XTherm NXT features a robust 70D nylon bottom and a 30D ripstop top, balancing toughness and lightweight packability. Users report it stands up well to outdoor use with minimal issues. The Big Agnes Zoom UL Insulated, while durable with its 20 denier nylon and reliable valve system, receives mixed reviews. Some users praise its durability, while others note concerns over time. The XTherm NXT's higher denier fabrics and overall positive user feedback make it the more durable choice.

Noise

Therm-a-Rest NeoAir XTherm NXT

2.1/ 5.0

Zoom UL Insulated

2.4/ 5.0

Noise can be a significant drawback for light sleepers or those sharing a tent. A quiet sleeping pad ensures you and your tent mates can sleep undisturbed. The Therm-a-Rest NeoAir XTherm NXT is known for its crinkly, potato-chip-like sound when shifting positions, which can be quite noticeable. The Big Agnes Zoom UL Insulated also has noise issues, with users reporting squeaky sounds and a rubbery feel that can be disruptive. While neither pad is particularly quiet, the Zoom UL Insulated has slightly fewer complaints about noise, making it the marginally better option in this category.

Packability

Therm-a-Rest NeoAir XTherm NXT

4.6/ 5.0

Zoom UL Insulated

4.6/ 5.0

Packability is essential for backpackers who need to save space and reduce weight in their packs. Both the Therm-a-Rest NeoAir XTherm NXT and the Big Agnes Zoom UL Insulated excel in this area. The XTherm NXT packs down to a compact 9x4.5 inches and weighs under a pound, making it easy to fit into most backpacks. The Zoom UL Insulated is also highly packable, with users praising its small packed size and lightweight design. Both pads are designed to be ultra-light and compact, making them ideal for backpackers who prioritize saving space. With both products scoring equally high in packability, the choice comes down to personal preference in packed size and weight.

Ease Of Use

Therm-a-Rest NeoAir XTherm NXT

4.4/ 5.0

Zoom UL Insulated

3.3/ 5.0

Ease of use is important for quickly setting up and packing away your sleeping pad, especially in cold or wet conditions. The Therm-a-Rest NeoAir XTherm NXT features a WingLock valve and included pump sack, making inflation and deflation quick and easy, even with gloves on. Users appreciate the one-way valve system for efficient setup. The Big Agnes Zoom UL Insulated has a single port, dual-function valve system that also aims to simplify inflation and deflation. However, some users find the valve a bit finicky and less straightforward to use. The XTherm NXT's more user-friendly valve system and positive user feedback make it the winner in ease of use.

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Conclusion & Final Verdict:

After comparing the Therm-a-Rest NeoAir XTherm NXT and the Big Agnes Zoom UL Insulated, it's clear that each pad has its strengths. The XTherm NXT excels in warmth, durability, and ease of use, making it ideal for cold-weather backpacking trips. On the other hand, the Zoom UL Insulated is slightly lighter and more packable, making it a great choice for those prioritizing space and weight savings.

Choose the Therm-a-Rest NeoAir XTherm NXT if you need superior warmth and durability for cold conditions. Opt for the Big Agnes Zoom UL Insulated if you're focused on minimizing pack size and weight for warmer weather trips.

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