Updated 01/03/2026

The UST Fillmatic Sleeping Mat provides the ultimate in cushy comfort for sleeping on camping trips at a much lower cost than similar sleeping pads.

What I like about the UST mattress

The UST Gear Fillmatic Sleeping mat is a 4″ thick foam and air mattress that makes setting up camp easy – with a self-inflation feature that means I don’t have spend time filling it with air. Just unroll it, open the valve to inflate, and it’s ready to sleep on with minimal effort.

I use this mattress on every camping trip I go on, whether it’s in my car, on the ground in a tent, or on cots. It’s like having my bed from home with me wherever I go.

Specs

• size: regular (72″ x 25″ x 4″); extra large (80″ x 30″ x 4″)
• warmth rating: R-value 6
• weight: regular (4 lbs 11 oz); extra large (5 lbs 5 oz)
• materials: top and side (30D stretch fabric w/ TPU coating); bottom (190T polyester w/ TPU coating)
• price: regular $109.99; extra large $139.99

Features

Comfort: The combination of foam and air makes this mattress adjustable based on individual preference. Fill it all the way for a firmer feel, and release some of the air for a softer feel. I like to have it filled about 90% full for a less firm feel.

Fabric: Most air mattresses have a plastic feel, but the UST Fillmatic uses a softer stretchy fabric that feels similar to a flannel sheet.

Warmth: The warmth rating of a sleeping pad is just as important (if not more so) than a sleeping bag temperature rating in terms of keeping you warm overnight. This mattress has an R-value of 6, which is at the higher end of the industry standard rating system to indicate a pad’s ability to insulate.

Ease of use: The two-way valve system makes setup easy. Turn the valve to inflate and it will begin to fill up with air. When it’s time to pack up, turn the valve to deflate while you press the air out. The deflate valve prevents it from refilling with air, making it easier to compress for packing. In case it doesn’t fill up all the way, I take a small air pump to inflate the pad a bit more.

Durability: I’ve used this mattress on camping trips for over five years and have had no issues with leaks, tears, or any other functionality — until recently, when one of the two mattresses I own developed a slow leak, which I suspect was caused by it being scraped by gear while loaded in the car without being stored in its stuff sack.

Coupling buckles: Buckles at each end of the pad allow you to combine two mattresses together.

Disclosure: this item was donated for the purpose of a review.

Gear Reviews: My goal is to share clear, unbiased information about outdoor gear. I am not sponsored by any gear companies and I don’t accept paid posts or links. I regularly receive products from brands for review, with no expectation of a positive review and no compensation for my opinions. As an independent gear reviewer, I only review items I’ve personally used on multiple trips and that I believe are high-quality and worth recommending.

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