Enlightened Equipment Revelation 20 vs Zpacks Zip Around Sleeping Bag
Two pieces define a large portion of the serious ultralight sleeping market. The Enlightened Equipment Revelation 20 and the Zpacks Zip Around Sleeping Bag approach the same 20°F use case from opposite directions — a pure top-quilt versus a convertible zip-around bag — for the same core audience: gram-conscious backpackers unwilling to sacrifice genuine warmth. This comparison examines fill power, footbox and coverage design, cut geometry, and the price-to-warmth calculation that determines which one earns a place in a pack.
Enlightened Equipment Revelation 20
The Revelation 20 is EE’s most widely sold quilt. Details are drawn from the manufacturer’s product page at https://enlightenedequipment.com/revelation-sleeping-quilt/.
Fill and insulation. The Revelation 20 uses 850 fill power goose down. That figure sits one tier below Zpacks’ 900, but the difference in compressibility and loft recovery is marginal in practical field use. The 20°F floor rating targets three-season use with a buffer for shoulder-season cold snaps.
Shell and cut. EE offers a 10D and 20D nylon shell. The differential cut — more fabric on the top panel than the bottom — allows the down to loft fully upward rather than being compressed between body and pad. This is standard practice for quality quilts and EE executes it reliably. The shell is treated with a DWR finish; the specific treatment depends on the shell weight selected at checkout.
Draft collar. The Revelation 20 includes an integrated draft collar at the shoulder opening. This is a meaningful feature. Without a collar, warm air escapes laterally when a sleeper shifts position. EE’s collar cinches down and holds position reasonably well through the night.
Configurability. Width, length, and shell weight are all selectable at order time. This granularity lets a buyer pay only for the fill weight a specific body size actually requires, which supports the price-to-warmth argument for this quilt.
Price and lead time. EE manufactures to order. Base pricing is listed on the configuration page and varies with options selected. Lead times lengthen during high-demand periods.
Zpacks Zip Around Sleeping Bag
The Zpacks Zip Around Sleeping Bag is a hoodless down bag whose zipper runs all the way around the footbox, so it closes into a full mummy-style bag or opens flat into a quilt. Specifications and construction details are drawn from https://zpacks.com/products/zip-around-sleeping-bag.
Fill and insulation. Zpacks uses 900 fill power goose down. The higher fill power means a given warmth level can be achieved with less fill weight. The bag is offered in three ratings — 30°F (−1°C), 20°F (−7°C), and 10°F (−12°C) — so for this matchup the apples-to-apples configuration is the 20°F version, the same floor as the Revelation 20.
Weight. Listed weight varies widely with rating, length, and width — roughly 446 g to 865 g across the range. The 20°F regular lands around 612 g, the figure relevant to this comparison. Because the spec is so configuration-dependent, treat any single number as a starting point and confirm the exact build at order time.
Footbox and coverage. The defining feature is the zip-around footbox. Closed, it behaves like a sealed bag with full underside coverage; opened, it lays flat as a quilt; and on warmer nights the foot zip alone vents heat. That versatility is something a sewn-footbox quilt cannot offer. The trade is grams: full bag coverage carries more shell and fill than a minimal top-quilt at the same rating.
Hood. The bag is hoodless. In genuinely cold conditions that means pairing it with a hooded down jacket or a separate hood — a normal ultralight approach, but a planning step the Revelation’s draft collar does not require.
Price. Made-to-order, with pricing that scales by rating, size, and options. For a 20°F target the cost sits in the same serious-ultralight tier as the Revelation; the question is whether the bag-or-quilt versatility is worth the added weight over a dedicated top-quilt.
Direct Comparison
Fill power: Zpacks holds a nominal edge at 900 vs. 850. In practice, both are high-performance downs and the difference is unlikely to be perceptible in field conditions.
Coverage: The Revelation is a top-quilt — open underneath, pad-strapped, minimal. The Zip Around closes fully around the body and foot, which seals drafts without pad straps but adds material. Different philosophies for the same rating.
Construction: The Revelation drapes a differential-cut top panel; the Zip Around wraps fully around the body. Different structures, both aimed at consistent loft.
Temperature rating: Matched here — both at 20°F. The Zip Around also offers 30°F and 10°F builds if a warmer or colder floor is wanted, but at the same 20°F rating warmth delivery is comparable; the difference is coverage (full bag vs top-quilt), not temperature.
Price-to-warmth ratio: For a pure 20°F top-quilt, the Revelation 20 is the lighter and more efficient purchase, and EE’s configuration system tightens the ratio by letting a buyer avoid paying for width or length that doesn’t match their body. The Zip Around asks a weight-and-cost premium in exchange for bag-or-quilt versatility.
Availability and lead time: Both are made-to-order products from US-based manufacturers. International buyers face similar friction with either brand.
Closing
The choice between these two is less about temperature — both deliver a 20°F floor — and more about form. A buyer who wants the lightest, most configurable top-quilt for three-season use gets more value per dollar from the Enlightened Equipment Revelation 20. A buyer who wants one piece that closes into a full bag on cold nights and opens flat as a quilt when it warms up will find the Zpacks Zip Around’s versatility worth its weight and price premium.