Hennessy Hammock Ultralite Backpacker Classic M20, standard rainfly review

The Ultralite Backpacker Classic M20 is the bottom-entry counterpart to Hennessy's side-zip backpacker models. This review covers the exact standard-rainfly package, not the separate custom-body listing that lets a buyer select webbing. The product page and its paired record identify SKU M20; the review relies on those manufacturer claims and the current comparison chart, not personal use or weighing.

What the M20 package is designed around

Hennessy lists a large 120-by-59-inch fabric body, a six-foot user-height limit and a 200-pound hammock limit. The standard offer is described with attached mosquito mesh, a detachable stock rainfly, support ropes and complimentary 42-inch TreeHugger webbing. It is a single-bottom hammock, unlike two-layer Deep Jungle models, and the manufacturer names a hook-and-loop bottom entry rather than a zipper. Those are the key decisions here: entry preference, a built-in screen, and a standard fly-and-webbing package.

There is an obvious metric typo in the page's introductory copy: it pairs six feet with 305 centimeters. The specification block on that same page says six feet/183 centimeters, as does the current comparison chart. I use the consistent six-foot figure and flag the mismatch rather than treating the 305-centimeter text as a second valid limit. The 120-inch body length is not a recommendation for a particular sleeper or a universal hanging span. Measure the site and follow the model's setup instructions.

Weight and fabric details need a careful read

The product page states 1 pound 15 ounces before the separately counted two ounces of webbing. Its metric equivalent is printed as 868 grams, while the comparison chart pairs the same imperial value with 879 grams; the product record's weight number has no unit. I therefore keep the stated 31-ounce imperial claim, preserve the source discrepancy and do not call any of the figures measured.

The exact Classic page describes 30D high-tenacity nylon with PU/silicone coating and a Silnylon 66 ripstop construction. The current comparison chart instead calls the Ultralite Backpacker body 70D nylon. These are both manufacturer materials, but they are not the same specification; don't infer strength, durability or fabric identity from the product family's name. If that distinction determines a purchase, ask Hennessy to clarify the current M20 body. The fly, hammock fabric and mesh are separate elements; a screen does not make the hammock a rain shelter or add under-body insulation.

Choose Classic closure and stock package for the right reasons

The M20 suits a buyer who wants the maker's bottom-entry/Velcro design, attached screen and included stock fly and webbing, and for whom the 200-pound body limit is sufficient. Someone who prefers side entry should compare an exact Zip model rather than assume the same experience. Someone who wants chosen strap lengths should inspect the custom body offer separately: it is not the same standard package, and its first step should not be treated as including the standard rainfly.

The hammock's stated capacity does not rate the supplied ropes, webbing, connecting hardware, anchors or a stand as a complete system. Check each item's own instructions, verify that the live offer is actually M20 Standard Rainfly, and plan top and bottom insulation according to the conditions rather than treating the fly as warmth. The listed features describe a model; they do not certify a particular campsite, sleep setup or personal fit.