Mantis UL Review: Ultralight Hammock for Backpackers

When every ounce counts on the trail, your shelter is the first place to trim weight. The Kammok mantis-ul-hammock-tent-3f3cf90a6b80a50e6a2a85cc-505933">Mantis UL is designed for backpackers who want the comfort of a hammock without the bulk of a full camping setup. We took it on a three-day trip in the Smokies to see if it lives up to the ultralight hype.

The Mantis UL is the lighter sibling of the original Mantis, shaving off nearly a pound by using a 10D nylon fabric and a minimalist tarp. But does that weight savings compromise durability or comfort? In this Mantis UL review, we break down the specs, setup, and real-world performance to help you decide if it's the right backpacking hammock for you.

Mantis UL Specs and Weight

The Mantis UL tips the scales at just 1 pound 13 ounces for the complete system, which includes the hammock, bug net, tarp, and suspension. That's remarkably light for a full hammock shelter, making it a strong contender for ultralight backpackers who typically use a ground tent or bivy sack.

The hammock body uses a 10D ripstop nylon that's both soft and strong, with a 300-pound weight capacity. The included tarp is also 10D with a 1,200mm waterproof rating, which is adequate for summer showers but not for heavy alpine storms. The bug net is integrated into the hammock, saving weight and setup time.

• Total weight: 1 lb 13 oz (complete system)
• Hammock fabric: 10D ripstop nylon
• Tarp coverage: 10.5 ft by 8.5 ft
• Weight capacity: 300 lbs
• Includes: hammock, bug net, tarp, and suspension

Comfort and Sleep Quality

Hammock comfort is subjective, but the Mantis UL's 10-foot length and 58-inch width provide a generous sleeping area for most campers. The fabric has a slight stretch that conforms to your body, reducing pressure points. We slept soundly through the night, and the integrated bug net kept mosquitoes at bay without feeling claustrophobic.

One thing to note: the Mantis UL does not include a sleeping pad. For insulation, you'll need to pair it with a pad or underquilt. We used a simple foam pad and stayed comfortable in 60-degree weather, but for colder nights, you'll want a proper underquilt.

Setup and Packability

Setting up the Mantis UL takes about 10 minutes once you're familiar with the process. The included tree straps and carabiners are easy to adjust, and the tarp attaches with a series of guy lines that secure to the hammock's ridgeline. The integrated bug net zips open on both sides, giving you easy entry and exit.

When it's time to pack, the Mantis UL stuffs down to the size of a large grapefruit. It fits easily into a backpack's side pocket or main compartment. The included stuff sack has a compression strap, which helps you squeeze out extra air and save space.

Durability and Weather Resistance

The 10D fabric is undeniably light, but it's also thin. We didn't experience any tears or punctures during our trip, but we were careful to avoid sharp branches and rocks. The tarp held up well in a light rain, keeping the hammock dry, but we wouldn't trust it in a downpour without seam sealing.

For most three-season backpacking, the Mantis UL is adequate. If you plan to hike in harsh conditions or expect heavy rain, you might consider a more robust hammock like the Kammok Mantis (the standard version) or the Swiftlet, which offers more coverage. However, for weight-conscious hikers, the trade-off is worth it.

Mantis UL vs. Other Kammok Hammocks

Kammok offers a range of hammocks, from the budget-friendly Wallaby Hammock with Straps to the feature-packed Swiftlet. The Mantis UL sits at the premium end, targeting backpackers who prioritize weight. Compared to the Wallaby, the Mantis UL includes a bug net and tarp, making it a complete shelter system, while the Wallaby is just a hammock.

If you're not ready to invest in a full system, the Wallaby Hammock with Straps is a great lightweight option for day hikes or car camping. But for multi-day backpacking trips, the Mantis UL's integrated design saves you from carrying extra gear.

Accessories to Consider

To get the most out of your Mantis UL, consider pairing it with a few accessories. A good underquilt will extend its warmth range, and a gear sling or side mount kit can keep your essentials within reach. The Crosswing Side Mount Kit is a handy add-on that attaches to your hammock straps to hold a water bottle or phone.

Another useful accessory is the Mesa Mat, a versatile outdoor blanket that can serve as a ground cloth or extra insulation. And for cleaning and maintaining your hammock, the Grangers Down Wash + Repel is perfect for refreshing the DWR treatment on the tarp and hammock fabric.

The Mantis UL is an excellent choice for backpackers who want to sleep in comfort without carrying a heavy load. It's lightweight, packs small, and provides reliable protection from bugs and light rain. While it's not built for extreme weather, it excels in its intended role as a three-season ultralight hammock. If you're ready to upgrade your backcountry sleep system, the Mantis is worth every ounce.