Hennessy custom 4Season Expedition Zip, P316E body plus selected TreeHugger webbing review

Research-based assessment: the Hennessy custom 4Season Expedition Zip is the body-and-webbing branch of the Expedition family, not the preconfigured M316 package. Its builder lets the buyer choose one TreeHugger strap length, starts with no rainfly, and offers a matching fly separately. The 4Season model chart gives a 6-foot height limit and 250-pound hammock limit, but the custom page does not publish the body dimensions or a reliable all-in packed weight. This review uses manufacturer specifications only; it does not claim a personal hang, measurement or cold-weather test.

A body builder rather than the M316 bundle

The exact U.S. listing is titled “Build Your Own 4Season Expedition Zip.” Step one is a hammock body paired with a selected webbing length; the page explicitly says to order it without a rainfly. A 70D Expedition rainfly is a later, optional selection. That makes this listing a distinct package from the standard M316, whose own offer is sold with a stock fly and 42-inch webbing. The body-builder page also calls the 4Season’s specially designed insulation already included, but the builder does not identify the insulation pieces or their precise box contents. Do not assume it includes a particular foam pad, space blanket, extra insulation system or storage accessory. Check the live cart for the exact variant and add-ons.

Useful listed limits, with a real information gap

Hennessy’s comparison chart places the 4Season Expedition at a 6-foot height limit and 250-pound hammock capacity, with a two-layer 70D-plus-40D nylon bottom. The manufacturer describes its 4Season construction as a way to use an insulation layer beneath the sleeper; that design intention is not a temperature rating or guarantee. The builder page itself does not state lower-fabric length or width. I leave both dimensions unconfirmed rather than importing them from the related M316 page. That means the body-length and body-width numeric finder filters will not return this builder, even if the model-family chart’s height or weight limit sounds suitable. Numeric matching requires the exact fabric dimension, and a listed body limit is not a rating for ropes, webbing, trees, anchors or a complete hang.

Choose webbing for the actual hang

The builder identifies three mutually exclusive TreeHugger choices: 42 inches, 72 inches or 96 inches. It associates those lengths with trees up to 14, 24 and 36 inches in diameter, respectively. The separate general features page gives a different tree-diameter figure for the 96-inch option (32 inches). I cannot reconcile the discrepancy from these sources, so treat those examples as manufacturer guidance rather than a safe fit calculation. Measure the actual tree or other approved support, check the required wrap and hang geometry, and verify current instructions before choosing. A supplied tree strap is only one component of a safe suspension; the exact builder page does not itemize the end-rope configuration. Confirm the full package and every component’s compatibility instead of treating “straps included” as a complete-suspension certification.

Integrated screen and optional weather cover

The product’s exact title identifies the Zip version. Hennessy’s features page explains that its Zip side-entry closes between the mesh and lower hammock fabric, which is the maker’s distinction between its zip and bottom-entry designs. The builder names an Expedition Rainfly 70D Polyester as an optional model-specific add-on; no fly should be assumed in the base body-plus-webbing choice. A screen, when deployed and correctly closed, is for insect separation—not rain protection or warmth. If overhead coverage is needed, confirm that the final custom order contains the chosen fly and that its setup matches the current manufacturer instructions.

Who this configuration suits—and what to verify

This is a plausible route for a buyer who wants the 4Season Expedition Zip model and needs to select among the three webbing lengths, while accepting that a rainfly is a separate choice. It is less straightforward for anyone comparing measured body lengths, requiring an all-in carry weight, or expecting a fully itemized cold-weather kit from the product page alone. The supplied image identifies the exact custom 4Season Expedition package, but it shows the branded bag and a webbing strap rather than an installed hammock; it is not evidence of all kit contents.

Before ordering, confirm the selected P316E strap SKU, its current availability, the complete end-to-end suspension, optional fly choice, included insulation components, and current instructions. Ask the maker to resolve the 96-inch strap’s two tree-diameter descriptions. Recheck seller, returns and current recall information as a separate purchase step. The evidence supports the listed model and its documented options—not a claim that the setup has been personally used or independently tested.

Manufacturer sources: custom 4Season Expedition builder, hammock comparison chart and Hennessy feature and strap guidance.