A scuba harness has two separate components: the backplate and the wing. The buoyancy compensator attaches both pieces to the buoyancy compensator. This creates positive buoyancy at the surface and neutral buoyancy under water. Backplate, wing, and the rest of the system are modular. Each piece can be removed from the others. They are a good option for scuba divers that aren't sure which type to get. Below are the pros and cons for each.
Stainless steel
A stainless steel back plate and wings can be purchased with or without an attached harness. The backplate and wings are made of 316 stainless steel. It is extremely resistant to saltwater. It is cut by a CNC router and polished manually to prevent any sharp edges from causing premature wear. These can be used with either a single or dual-airtank system. The stainless steel backplate and wings can be detached for easier storage.
Stainless steel backplates can be heavier than aluminum. Stainless steel backplates work well in colder climates and will reduce your weight while diving. Stainless steel backplates fit all types of dive tanks better than lead pieces. A Halcyon Dealer can provide weighting advice to determine what's appropriate for your body weight. You won't need to replace this backplate as often because it will last longer.
Plastic
While the buoyancy from the plastic backplate or wing can be a problem, it can still make it easier to replace the weight belt. Jacket BCDs can also include weight integration and pockets. These ancillary features are not available for the backplate or wing system. These components are available separately. We will be discussing the pros and cons for each. It is crucial that you choose the right type and size of back plate to suit your needs.
Softpack harness
There are many kinds of harnesses, both for wings or backplate. Backplates, wing BCDs, and the most common are both available. They come with all the components needed, including a harness and backplate. Softpack BCDs, which are lightweight and flexible, are great for technical divers.
The problem with steel backplate harnesses, however, is their inability to be adjusted. The harness is not meant to be used on single tanks. It can only be used on double tanks with permanent banding. The steel harness is rigid but can be difficult to use when traveling. In addition, it is only suitable for double tanks, and the steel backplate may be unsuitable for use on land. Although it can be used with single tanks by attaching adapters this is not recommended.