Sailing Spray Tops Compared: Zhik vs Gill vs Sail Racing

This is an objective comparison of published specifications and construction, not a hands-on test.

Below a spray top's fabric rating, the story is the same across every brand: the shell almost never wets through — water gets in at the neck, the cuffs and the waist, and it fails there because of seal chemistry and closure geometry, not membrane physics. That is the lens for comparing Zhik, Gill and Sail Racing. For where this sits in the layering system, see the foul weather gear guide.

At a glance

The engineering axes that actually matter

1. Membrane physics: monolithic vs microporous

The single most consequential difference between these three is how the membrane moves vapour — and it's a genuine trade-off, not a marketing gradient.

Sail Racing's Reference is built on GORE-TEX Performance technology: an expanded PTFE (ePTFE) membrane with billions of sub-micron pores — the pores are around 20,000 times smaller than a water droplet but far larger than a water-vapour molecule, so liquid is blocked while sweat vapour passes through the open structure. The upside is high instantaneous breathability; the vulnerability is that open pores can be fouled by salt crystals, sunscreen and skin oils, and the laminate leans on its DWR to keep the face fabric from wetting out and choking vapour transport. The Reference pairs the membrane with a polyamide (nylon) face with 2-way mechanical stretch, which is the right call for a spray top — the give comes from the woven face, not from a soft, abradable membrane.

Zhik's AroShell takes the opposite route: a monolithic (hydrophilic, non-porous) membrane. There are no pores to clog. Moisture crosses by solid-state diffusion — vapour dissolves into the membrane on the humid inside and desorbs on the cool outside. In the moment it typically transports vapour a little slower than a clean ePTFE laminate, but it is far more tolerant of contamination and does not depend as heavily on a perfect DWR to keep breathing. For a Grand Prix crew who sweat hard through a training block and reproof rarely, that durability-of-performance is the pragmatic win. Zhik build it as a 3-layer shell — tough polyester outer, monolithic membrane, bonded mesh liner — with a deliberately reduced seam count to cut both bulk and failure points, and they quote roughly 20 percent lighter than the previous generation at equivalent protection.

Gill's XPLORE is a microporous system offered in two constructions that map neatly onto the weight/durability choice: XPLORE 2-layer (membrane bonded to face, separate hanging liner — lighter, breathes well, used on the Verso Lite and Pro spray tops) and XPLORE+ 3-layer (no separate lining, more abrasion-resistant, used on the Race-grade kit). The 2L is the natural spray-top construction; the 3L is what you'd want if the same smock also does duty as your foul-weather top.

2. What the published numbers actually say

Here the brands diverge in how transparent they are, and it's worth reading carefully.

Gill publishes the hardest numbers and, unusually, its test method. XPLORE 2L is quoted at 30,000mm hydrostatic head; XPLORE+ 3L at 35,000mm — and critically, Gill states it reads the column to the first droplet rather than the common industry practice of allowing three droplets through before recording failure, which makes its figure conservative relative to a like-for-like rival. On abrasion, XPLORE 2L is run to a 4-hour Martindale (grit-paper) cycle and XPLORE+ 3L to 8 hours, against a stated 10,000-oscillation (~3-hour) minimum for calling a fabric waterproof. Those are real, checkable engineering claims.

Zhik declines to quote a hydrostatic head and instead publishes a comparative durability result: AroShell tested at the Royal Melbourne Institute of Technology (RMIT) to be roughly twice as "waterproof-durable" as leading breathable ocean fabrics. That's a statement about how long the waterproofing survives flex-and-abrasion cycling — arguably more relevant to a spray top's real life than a single fresh-fabric HH reading, but it isn't directly comparable to Gill's millimetre figure. (Treat the "2×" as Zhik's own published claim; it is a relative, not absolute, number.)

Sail Racing leans on the GORE-TEX guarantee rather than a per-garment HH figure — GORE certifies the laminate as durably waterproof to its own internal standard, which is why the brand quotes technology rather than millimetres. That's normal for GORE-TEX licensees; the absence of a printed HH is not a red flag, but it does mean you're trusting the certification rather than a published number. Note GORE-TEX Performance here, not Pro — Pro's three-layer, tougher membrane is aimed at alpine abuse; Performance is the correct, lighter-breathing tier for a stretch racing spray top.

3. Seal architecture — where every spray top actually leaks

Independent bench testing of the category is unambiguous: the shell rarely fails; the neck seal decides whether you stay dry, and seal material and closure geometry dominate the outcome.

• Neoprene seals are a comfort choice, not a waterproof one. Tested head-to-head, bare neoprene neck and wrist seals let water trickle through under sustained spray, whereas PU or PU/Lycra seals close harder against the skin and shed water better. This is the awkward truth behind premium smocks: Sail Racing's Reference and (in warmth-first trim) many high-end tops use neoprene collar, cuff and hem for comfort and stretch, then rely on taped edges plus Velcro to cinch the aperture down. It's comfortable and warm; it is not the driest possible seal.
• Zhik's ReziSeal is the most interesting answer to this. Rather than plain neoprene, AroShell uses a composite seal fabric at neck and cuff engineered for a watertight closure with a wide, adjustable aperture — the point being to get a clean seal without the clammy, chafe-prone grab of raw neoprene. Paired with a smooth-skin neoprene waist, it targets the exact two leak paths that matter.
• Gill uses PU on the neck and cuffs of its Race/Verso smocks — materially the better sealing polymer — with an offset neck zip and Velcro. The caveat is documented: some Gill dinghy smocks have drawn criticism for Velcro-induced neck chafe, an issue Gill has acknowledged. So Gill arguably wins the seal material argument and the comfort argument is where it has to be watched.
• Closure geometry is the quiet decider. An offset (asymmetric) neck with a smooth-side neoprene waistband consistently outperforms a symmetric collar, because it moves the overlap off the throat and lets the closure pull shut without gapping when you throw your head to look up the rig. All three brands use offset necks — a sign the whole premium end of the market has converged on the same finding — but the execution (aperture width, flap depth behind the zip, waist Velcro travel) is where they separate. Bare-neoprene waistbands seep; smooth-lined neoprene with generous Velcro travel is the seal you want, and it's what Sail Racing and Zhik both fit.

4. Stretch and cut — the grinding-athlete pattern

A spray top lives or dies on unrestricted shoulder and torso movement, and there are two ways to buy it.

Sail Racing's Reference gets its give from a 2-way stretch polyamide face over the GORE-TEX membrane, and — the detail that betrays its origins — it was developed in the ORACLE TEAM USA programme for AC35, so the block pattern is cut for an athlete grinding and hiking, with interior sleeve reinforcement where a mainsheet or a hiking strap chews the fabric. That reinforcement is a meaningful durability feature on a Melges 40, where the trimmers and grinders load the sleeves and forearms constantly.

Zhik delivers mobility through the high-stretch AroShell laminate itself plus the reduced-seam construction, which removes the stiff taped seams that otherwise fight shoulder rotation. Fewer seams is not a cosmetic claim — every taped seam is a stiff, non-stretch line, so cutting their number directly buys back range of motion.

Gill's spray tops are cut lighter and closer than its offshore jackets and use stretch neoprene at the waist to keep the hem from riding up when you hike, but the mobility story is more "well-cut lightweight shell" than "engineered stretch system" — which is consistent with its value positioning.

5. Weight, and the warmth decision

Spray tops are minimal by design; the useful comparison is how each brand keeps the weight down. Zhik's headline is the ~20% weight reduction achieved by the reduced-seam 3L layup — real grams saved through construction, not by thinning the shell. In the wider category, the lightest tested two-ply dinghy smocks land near 420g (≈14–15oz), while premium 3-layer GORE-TEX smocks run heavier, around 600g (≈21oz) — the durability-versus-weight tax of a full 3L laminate, which is exactly the axis a Grand Prix crew is trading on.

Warmth is a layering decision, not a spray-top feature, and the honest answer is that none of these tops is your insulation. Zhik draws the line most clearly: the AroShell is a pure shell, and warmth comes from a separate Superwarm neoprene top (3mm insulating neoprene, fast-drying Hydrobase fleece inner, glued/blind-stitched/taped seams, 4-way stretch) worn under it. That decoupling is the right architecture for a Melges 40 — you tune insulation to the day and keep one hard-wearing shell over the top, rather than committing to a fixed thermal lining you can't shed on a warm afternoon.

Our pick

Our pick: Sail Racing's Reference for a Melges 40 Grand Prix crew who want the best-built, best-cut top and will manage a DWR routine — the GORE-TEX Performance laminate, 2-way stretch and AC35-derived, sleeve-reinforced pattern make it the sharpest racing garment of the three, and the neoprene seals are a comfort trade you accept knowingly. Choose Zhik's AroShell if durability-of-waterproofing and seal quality lead your list: the monolithic membrane holds its performance through contamination, the RMIT durability result is the most relevant number for a hard season, the ReziSeal seals target the real leak paths, and the reduced-seam 3L is genuinely light. Choose Gill's Race/Verso when you want the highest published hydrostatic head, honest first-droplet test transparency and PU seals at the best price — with an eye on the documented neck-chafe niggle.

Who each is best for

• Sail Racing (Reference) — grinders and trimmers who want an AC-programme race cut, stretch-face GORE-TEX and sleeve reinforcement, and will reproof to keep the ePTFE breathing.
• Zhik (AroShell) — crews prioritising durable, contamination-tolerant waterproofing, the best seal architecture (ReziSeal + smooth-skin neoprene waist) and low weight through construction; pair with a Superwarm layer for cold days.
• Gill (Race / Verso) — sailors who want published, conservatively measured HH figures (30k/35k), PU seals and value across a broad dinghy/inshore range.

The takeaway

Every one of these tops will keep the rain off; they separate on seal chemistry, closure geometry and how the membrane ages, not on whether the fabric is waterproof. Our pick: Sail Racing's Reference for the best build and the sharpest race cut, with Zhik's AroShell the toughest, best-sealed shell and Gill's Race/Verso the value and transparency choice. See the jackets and salopettes comparisons for the rest of the layering system.