Halcyon Wings and Backplates: The Complete Buyer's Guide

You don't need to be a technical diver to want better kit. Plenty of recreational divers make the switch to a backplate and wing system simply because it fits better, trims better, and lasts longer than anything else they've tried. Halcyon has been building this kind of equipment for decades — and once you dive it, it's hard to go back.

At its core, a Halcyon setup replaces the all-in-one jacket BCD with two separate components: a rigid backplate that carries your harness, and a wing that provides your buoyancy. That separation is the whole idea. Each part does one job, does it well, and can be replaced or upgraded independently. The result is a cleaner, more comfortable rig that rewards good buoyancy technique and handles a wider range of diving conditions than most divers expect.

Whether you're diving warm-water reefs on a steel cylinder, suiting up in a drysuit for cold-water UK diving, or starting to explore twin cylinders for the first time, there's a Halcyon configuration that fits. This guide walks you through every product we stock — what it does, who it's for, and how to choose the right combination.

The appeal of Halcyon wings and backplates isn't just about performance — it's about how the system is designed to work with you over a long diving career.

A jacket BCD places buoyancy all around your torso, which makes it easy to stay upright at the surface but works against you underwater. The buoyancy wraps around your sides and front, pushing you into a heads-up, feet-down position rather than the horizontal trim that makes swimming efficient. A back-mounted wing keeps all the lift behind you, which naturally encourages a flatter, more streamlined position in the water — less effort, less gas consumption, more control.

Beyond trim, the practical advantages stack up quickly:

• Modularity: change your wing without changing your harness, or take your backplate travelling with a lightweight wing
• Durability: RF-welded bladders, 1000D Cordura shells, and stainless or carbon fibre hardware built to last years of regular diving
• Repairability: individual components can be serviced or replaced rather than retiring the whole unit
• Fit: a proper harness system sits closer to your body than a jacket BCD, with less bulk and less movement underwater

The switch does require a little adjustment — particularly if you're used to relying on a jacket BCD to hold you upright at the surface. But most divers find that within a few dives, the benefits in the water far outweigh any surface habit changes.

The bladder design matters here. The Eclipse 40 uses a donut-style bladder that wraps the cylinder and distributes buoyancy evenly rather than concentrating it in a single lobe. Even distribution means you're not constantly correcting against the wing to hold a flat position — the lift works with your trim rather than against it.

The construction is straightforward and honest: 1000D Cordura outer shell, RF-welded inner bladder, rapid drainage system to shed water weight at the surface. Halcyon backs the bladder seams with a lifetime warranty, which tells you everything you need to know about how confident they are in the build quality.

The Eclipse 40 suits divers who:

• Dive steel cylinders and need the lift to match
• Dive in cold water or a drysuit and carry extra weight
• Are making the move from a jacket BCD and want a wing that rewards proper horizontal trim
• Want a wing they can build a full modular system around over time

It's also worth saying: you don't need to be an advanced diver to benefit from the Eclipse 40. Many recreational divers choose this wing simply because it fits the way they dive — it's honest kit that doesn't require any particular qualification to appreciate.

At 40 lb of lift, the Evolve 40 is optimised for lighter twinset configurations — particularly aluminium cylinders — where you want reliable, precise buoyancy without a wing that adds unnecessary bulk. It's a compact, capable wing that doesn't try to do more than it needs to.

The Evolve 40 is the right choice for divers who are:

• Building their first twinset rig and want a wing designed for the job
• Diving caves, wrecks, or any environment where stable trim and predictable buoyancy matter
• Progressing from single-tank diving and ready to invest in a proper doubles setup
• Looking for a reliable, well-built twinset wing with Halcyon's construction standards

The weight of the plate is a real, practical advantage. Stainless steel contributes meaningful ballast to your overall setup, which directly reduces the amount of lead you need on a belt or in pockets. For cold water diving, drysuit diving, or anyone who's ever had their hips dragged down by a heavy weight belt, that redistribution of ballast makes a noticeable difference to comfort and trim.

This bundle includes the Halcyon ACB Weight Pockets — a dedicated integrated weight system that clips directly to the harness waistband via a tri-glide connector. Each pocket holds up to 5 lb / 2.3 kg, keeps weight positioned vertically for a clean profile, and locks in with a side-release buckle. The removable weight pouch has a built-in carry handle, which makes loading and surface handling far more straightforward than it sounds.

What this combination gives you:

• A solid, heavy foundation that reduces your dependence on belt weights
• Integrated weight pockets that keep ballast secure, correctly positioned, and easy to manage
• Modular utility holes for accessories including the Halcyon MC Storage Pak and drysuit inflation kit
• Primary light mounting compatibility behind the ACB pocket
• Padding and cushioning for comfort on longer or multi-dive days

This is the backplate for divers who want maximum durability, built-in ballast, and a system that handles cold water and heavy configurations without compromise.

The standout feature is Halcyon's Cinch™ quick-adjust harness system. A patented design that lets you tighten or loosen the harness in seconds without removing the kit. That's genuinely useful when you're switching between a 3mm and a 7mm wetsuit across different dives on the same trip, or when you want to fine-tune your fit after entry rather than on the deck. Stainless steel hardware throughout means you're not trading longevity for the weight saving on the plate.

The carbon fibre plate is the right choice for divers who:

• Travel frequently and want to save weight without stepping down in quality
• Dive across different water temperatures and want fast harness adjustment between setups
• Want the most comfortable, adaptable harness Halcyon makes
• Are building a single-tank or twinset rig and want the lightest possible starting point

Both backplates are fully compatible with both wings. The system is modular by design — buy what suits your diving now, and swap or add components as your diving develops.

With four products across two categories, narrowing down is straightforward once you know what you're working with.

Start with your cylinder configuration:

1. Single cylinder → Eclipse 40 Wing
2. Twin cylinders → Evolve 40 Wing

Then choose your backplate:

1. Cold water, drysuit, or heavier kit — and you want integrated weights and maximum durability → SS Deluxe Backplate with ACB Pockets
2. Regular travel, variable exposure protection, or priority on harness adjustability → Carbon Fiber Backplate with Cinch Harness

If you're genuinely unsure, the SS Deluxe is the more forgiving starting point for UK-based divers — the ballast advantage alone tends to justify it for anyone diving in cooler water. The carbon fibre plate earns its price most clearly if you're on a plane to dive destinations several times a year.

And remember that if you need any help with the choice, you can always email us at support@mikesdivestore.com, schedule a video consultation, or drop by our Chiswick store for expert, face-to-face advice.