Two separate parts of a scuba helmet are the backplate (wing) and the wing (wing). Both are attached to a buoyancy compensationator which creates buoyancy below and above water. Backplate is modular and can be taken apart from the wing. These are great options for divers who aren't certain which type they should get. Below are the pros and cons for each.
Stainless steel
You can have your stainless steel wings or back plate with or without a belt. 316 stainless-steel is used for the backplate and wings and is highly resistant to saltwater. It is cut on a CNC cutter and polished manually to prevent sharp edges which can prematurely wear the strap. They can also work with single- or dual-air tanks. The stainless steel backplate and wings can be detached for easier storage.
Backplates made of stainless steel are more heavy than those made from aluminium. Stainless steel backplates are great for colder climates, where they'll reduce the weight you'll carry during your dive. Stainless steel backplates can be adjusted to fit most tanks, unlike lead pieces. To help you determine the right weight for you, a Halcyon Dealer will provide weighting advice. You don't have as many to replace the backplate.
Plastic
The buoyancy of the plastic backplate and wing is not good, but it is still beneficial when replacing the weight on your weightbelt. Jacket BCDs can also include weight integration and pockets. The wing and backplate do not have these ancillary functions. These parts are also available separately. These components can be purchased separately. This article will explain the pros and disadvantages of each. Choosing the right type of back plate for your needs is essential.
Softpack harness
There are many kinds of harnesses, both for wings or backplate. Backplates and wing-specific BCDs are the most popular. They include all of the essential components, such as a harness, backplate, and wing, and allow the user to customize the harness with a range of adjustable features. Softpack BCDs can be used by technical divers because they are lightweight and flexible, and don't attach to any rigid plates.
The problem with steel backplate harnesses, however, is their inability to be adjusted. This harness is not suitable for single tanks. It is only compatible with double tanks with permanent bands. The steel harness, while the most rigid, is also very cumbersome and difficult to use during travel. It is not suitable for single tanks and the steel backplate might be too heavy to use on the ground. Although it can be used with single tanks by attaching adapters this is not recommended.