ENO DoubleNest Hammock Review: Roomy, but Straps Are Extra

Bottom line

The DoubleNest’s case is space for its weight. At 19 ounces, it gives one person a wide sheet of fabric to lie across on a slight diagonal, or two people room to sit together, and it packs into its own attached stuff sack. The 400-pound rating covers everyone and everything in it combined.

The conditions are just as clear. You need tree straps, two suitable anchors within reach, a campground that allows hanging, and, for a night out, a separate plan for insects, rain and cold from below. Buyers who want one small shelter that does more of that should compare hammock systems that bundle a bug net and a rain fly; buyers who mainly want to sleep flat at a drive-up site are better served by a cot and pad.

ENO DoubleNest specs: which version is on the listing?

ENO has updated the DoubleNest’s fabric, and marketplace listings still carry older stock, print editions and bundles. Confirm these lines before checkout.

The triple-stitched seams and hammock-grade carabiners are part of ENO’s description of the current hammock. Neither is a substitute for inspecting the hammock and straps before each use.

How tight should you hang it? The strap-angle force table

Hang it with the straps angled well up from horizontal, as ENO’s instructions describe. At a 30-degree strap angle, each strap pulls with a force equal to the total weight in the hammock; at 10 degrees, the pull is nearly three times that weight. A tight, flat hang loads straps, carabiners and trees far more than a sagging one.

The reason is geometry. For a level, symmetrical hang at rest, the pull on each strap equals the total load divided by twice the sine of the strap’s angle above horizontal. The flatter the strap, the smaller the sine and the larger the pull.

At 30 degrees the sine is 0.5, so 250 ÷ (2 × 0.5) = 250 pounds on each strap. At 10 degrees the sine is about 0.174, so 250 ÷ 0.347 ≈ 720 pounds. The 250-pound load is an example; the multiples in the middle column apply to any load.

Three limits matter. The table describes a still hammock, and sitting down hard, swinging or bouncing adds force it does not show. ENO’s 400-pound figures for the hammock and the Atlas straps are capacity ratings, not tension figures published for each angle, so do not compare the right-hand column with them as a pass or fail test. And the table exists to explain ENO’s instructions, not to replace them: follow the maker’s hanging guidance for spacing, angle and height.

Will the straps reach? Tree size eats strap length

ENO’s standard Atlas straps carry 15 attachment loops each, 30 in total, and ENO’s listing as compiled gives 9 feet per strap; confirm the length on the listing you buy. ENO also sells a longer Atlas XL for wider spacing. A strap wrapped around a trunk and passed through its own end loop uses roughly one trunk circumference before any length reaches toward the hammock.

Usable reach per strap is therefore about the strap length minus the trunk’s circumference. With a 30-inch-circumference trunk, 108 − 30 = 78 inches, or 6.5 feet, remains of a 9-foot strap. With a 60-inch trunk, only 48 inches, or 4 feet, remains. These trunk sizes are illustrative; measure the trees and the spacing at the sites you actually use, then choose the strap length and follow ENO’s spacing guidance.

Two people and the 400-pound figure

ENO’s 400 pounds is the total for everything in the hammock. Suppose two adults weigh 190 and 165 pounds: 355 pounds, leaving 45 pounds for clothing, a blanket and anything in pockets. A third person, a large dog or a heavy bag closes that gap quickly.

Geometry matters here too. In a gathered-end hammock, two bodies slide toward the low center, which is why sharing works better for sitting side by side than for a full night’s sleep. The 6-foot-4-inch width gives one sleeper room to lie on a diagonal; it does not turn the hammock into a two-person bed.

What the DoubleNest does not include

Cold arrives from below in a hammock because a sleeping bag’s insulation compresses under your body. The camping mattress R-value guide explains how pad insulation is rated. A closed-cell foam mat, the Therm-a-Rest Z Lite SOL for example, can work in a hammock, but expect it to shift inside the fabric’s curve.

If insects are the main problem at a drive-up site, the Clam Quick-Set Escape screen shelter covers the whole picnic table rather than one hammock. If you rig a tarp with guylines, the MSR Groundhog Mini vs full stake comparison helps choose anchors for the soil you expect.

Campground rules and tree care

Some parks and campgrounds restrict hanging anything from trees, so check the rules for the specific site before you pack the hammock. Where hanging is allowed, use wide straps rather than rope or cord, which can bite into bark. Choose healthy, living trees, avoid dead trees and dead branches overhead, and keep the hang low over clear ground.

Care and inspection

Before each trip, inspect the stitching at both ends, the cord that gathers the fabric, the carabiner gates and every strap loop. Retire anything cut, frayed or bent rather than testing whether it still holds. Dry the hammock fully before packing it into its stuff sack for storage.

Who should buy it

Buy the DoubleNest if you camp where trees are allowed and available, you want a light hammock with enough width to lie across, and you will add straps at the same time. It suits lounging at a drive-up site, naps between hikes and relaxed evenings, where the attached stuff sack and 19-ounce weight make it easy to leave in the car.

If the hammock is for naps, a small adjustable pillow at its lowest setting fits the curve better than a thick one; the camping pillow comparison explains why floor-based pillow sizing does not apply in a hammock.

Who should skip it

Look elsewhere if you want a bug-proof or rainproof shelter in one purchase, if two adults expect to sleep in it all night, or if your usual campgrounds prohibit hanging from trees. Skip it too if you want to sleep flat; the tall-adult cot comparison covers raised beds for drive-up camps.

Alternatives worth considering

• ENO SingleNest: ENO’s one-person version, narrower and lighter by ENO’s own comparison, for someone who does not need the extra width; confirm its size on the listing.
• ENO DoubleNest and Atlas Straps bundle: the same hammock with matched straps in one listing, which removes the separate strap decision.
• A hammock system that bundles a bug net and a rain fly: a better fit when the hammock must also be the night’s shelter.

Sources consulted

• ENO DoubleNest Hammock
• ENO Atlas Hammock Straps
• ENO DoubleNest and Atlas Straps bundle
• ENO frequently asked questions
• OutdoorGearLab ENO DoubleNest review

Specifications and product identities were compiled through web search on September 29, 2026 and should be confirmed on the seller’s page for your exact size, color, and version. This is researched buyer analysis without hands-on testing.

FAQ

How big is the ENO DoubleNest?

ENO lists the current DoubleNest at 9 feet 6 inches by 6 feet 4 inches and 19 ounces. Listings for the older taffeta version quote slightly smaller dimensions, so confirm the figures on the listing you buy.

Does the ENO DoubleNest come with straps?

No. It includes carabiners, but tree straps are separate unless you buy ENO’s DoubleNest and Atlas Straps bundle.

Can two people sleep in an ENO DoubleNest?

Two people can share it within ENO’s 400-pound rating, which covers everyone and everything in the hammock combined. In a gathered-end hammock both bodies slide toward the center, so sharing suits sitting better than sleeping.

What angle should hammock straps hang at?

Use the angle in ENO’s hanging instructions. Each strap pulls with about the full load at 30 degrees and nearly three times the load at 10 degrees, so a flat, tight hang is the wrong goal.