Hennessy Hammock Expedition Asym Zip (SKU M16)

Published · Researched 2026-09-21

2026 lineup note: Current model on hennessyhammock.com — "Our Most Popular Zippered Camping Hammock." This dossier scopes the regular Expedition Asym Zip (SKU M16, UPC 832667111146). Do NOT mix with the Expedition 4Season Zip (different insulation/rating) — that model's specs must never be applied here.

Version lineage (2023–2026)

• Pre-2023: Expedition Asym (Classic bottom-entry) — the hammock that "started the hammock camping revolution"; Zip side-entry variant became the bestseller.
• 2023–2024: Expedition Asym Zip (M16) continued as the default recommendation for first-time hammock campers; CleverHiker tested the unit in Dec 2024 (Boundary Waters, Ice Age Trail).
• 2025: CleverHiker's review published Jan 2025 — 3.9/5.0: "a solid, all-in-one kit... great choice for people just getting into hammock camping."
• 2026: Still current at $169.95 USD (hennessyhammock.com, crawled Sept 2026), Forest Green, free webbing straps. No redesign announced — UNVERIFIED whether any revision exists.

Overview

Hennessy Hammock's Expedition Asym Zip is the classic all-in-one hammock camping kit: asymmetric-cut hammock (diagonal lay for flatter sleeping), structural ridgeline for a repeatable hang, integrated no-see-um bug net with heavy-duty #10 YKK side zipper, 70D catenary-cut rainfly, 10' suspension ropes, and free 42" Tree Hugger straps — everything but stakes in one 2 lb 12 oz package.

Key Specs

Pricing

• MSRP: $169.95 USD — hennessyhammock.com, Sept 2026, ships USA & internationally; free webbing straps.
• Street: REI/Amazon typically match; UK £139.95, EU €149.95. Re-verify live.

In the Box

Hammock with attached mosquito netting, detachable rainfly, support ropes, stuff sack with setup instructions, Tree Hugger webbing straps (42"), ripstop polyester bag. No stakes included.

Warranty

Hennessy Hammock's formal warranty terms are not stated on the product page — UNVERIFIED. The retailer Varuste lists a 12-month warranty on this SKU, but that is the retailer's term, not Hennessy's. Re-verify with Hennessy directly before publishing.

Support & Parts

Hennessy sells replacement rainflies, straps, snakeskins, and insulation through hennessyhammock.com; the company (Galiano Island, BC) has decades of hammock-specific support.

Community Verdict

The Expedition Asym Zip is the default "first hammock" recommendation: CleverHiker (Jan 2025) — "solid, all-in-one kit... for the price... great choice for people just getting into hammock camping"; a 5-month thru-hike owner reported it never ripped, snapped, or lost waterproofing. Owners love the flat diagonal lay, the bugproof all-in-one package, and the value. The knocks are well-documented: the stock tarp is small ("dew rag" in real rain — many upgrade to the Hex fly), the rope-lashing suspension confuses beginners (3.5-ft straps too short for big trees; whoopie slings are the popular upgrade), black guylines trip people, comfort has one sweet spot and tall users feel cramped (CleverHiker: over 5'9" should look at the Explorer Deluxe Zip XL), and you obviously need trees.

Images

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Research date: 2026-09-21. Specs from hennessyhammock.com (crawled Sept 2026), CleverHiker review (Jan 2025), Trailspace/Campsaver/REI owner reviews, Outdoor Vancouver review. Re-verify live: price, warranty terms, fabric-spec conflict.

Long-term durability & warranty-claim reality (enrichment — Sept 2026)

The 70D fabric is the durability story — CleverHiker: "thickest of any hammock we tested"; the thru-hiker's 5 months of near-exclusive living produced no rips, snaps, or waterproofing loss. The #10 YKK zipper is a known-strong point vs the old Velcro bottom-entry. Long-term wear: suspension ropes fuzz with use; the stock tarp's PU coating is the eventual failure item (recoat or replace). Hennessy's warranty terms could not be verified — a real gap to disclose, since competitors (Warbonnet, Kammok) state theirs.

Version history — year by year (enrichment — Sept 2026)

• 2023: Best-selling Zip model; the 70D catenary-cut rainfly revision (lighter, fewer wrinkles) was already in place.
• 2024: CleverHiker field-tests in Boundary Waters/Ice Age Trail.
• 2025: CleverHiker review published (3.9/5.0, $170, measured 46.5 oz full kit).
• 2026: Current at $169.95; SKU M16 unchanged.

Head-to-head vs closest rivals (enrichment — Sept 2026)

• vs Warbonnet Blackbird XLC (/library/gear/camp-furniture/warbonnet-blackbird-xlc/): the Blackbird is the upgrade pick — roomier, better tarp options, cottage-industry support; Hennessy wins on all-in-one value and beginner simplicity.
• vs ENO DoubleNest (/library/gear/camp-furniture/eno-doublenest-hammock/): the DoubleNest is a lounging hammock, not a sleep system — Hennessy is the actual overnight shelter with bug net and fly included.
• vs Kammok Roo Double (/library/gear/camp-furniture/kammok-roo-double/): the Roo is a bigger, plusher day-hammock; for overnight, Hennessy is the complete kit.

Care & maintenance (enrichment — Sept 2026)

Learn the lashing before the trip — practice in the backyard. Replace or supplement the short stock straps for big trees. Store loose and dry; reproof the tarp's PU coating when water stops beading. Snakeskins (sold separately) make setup/takedown sub-5-minutes and keep the hammock off the ground.

Buying traps (enrichment — Sept 2026)

• 4Season vs regular: the 4Season Expedition Zip is a different, insulated model — verify SKU M16 / UPC 832667111146.
• No stakes: tarp and hammock stakes are not included.
• Stock tarp size: plan the Hex fly upgrade if you camp in real rain.
• Height: CleverHiker says over 5'9" will feel cramped; Hennessy rates it to 6'.
• Suspension learning curve: the rope lashings confuse first-timers; budget for whoopie slings or longer straps.

Community Verdict — additional voices (enrichment — Sept 2026)

Additional sourced voices (Sept 2026): CleverHiker full review (3.9/5.0): pros — affordable, built to last, well-executed asymmetric design; cons — not roomy, small tarp, unconventional setup; measured 27.5 oz hammock body alone; "the most accessible way to explore" hammock camping. Hiking Earth (5-month thru-hike): "never ripped, snapped, or lost its waterproof properties"; tarp "simply too small" — "Old Timer" called it a "dew rag"; Hex fly upgrade made him "could not have been happier." Trailspace owner: "Well constructed... So easy! Can't say this enough" on setup; tree-saver straps "fit all the trees I found wonderfully" (5"–25" diameters); bug net "totally effective." REI owner (5'11", 200–225 lb, 3-star): sway takes "up to an hour" to stop; larger users find entry/exit a "production"; hangs with feet slightly higher to avoid sliding. Outdoor Vancouver: setup "fairly straightforward" even for the knot-terrible; snakeskins make pack-up trivial. Campsaver Eli: "The material felt durable... any puncture or tear would be deliberate."

Social-first research note

Threads, Facebook/Facebook-group, and Instagram were searched before retailer/review sources per protocol. No directly extractable public posts (private Facebook groups are not accessible) were surfaced; the verdict draws on independent review sites, owner reviews, and hiking blogs.

Key Specs gap-fill (enrichment — Sept 2026)

Weights in both units: 1,232 g = 43.5 oz = 2 lb 12 oz (official); CleverHiker measured 46.5 oz / 1,318 g full package incl. suspension+tarp (their scale). Hammock body alone measured 27.5 oz / 780 g. Straps 84 g = 3 oz. Rainfly 280 g = 10 oz. Limit 250 lb = 113 kg. Bottom 305 × 150 cm = 120 × 59 in. Packed 10 × 18 × 23 cm = 4 × 7 × 9 in.