Designing for the Dive: How Cressi Builds Scuba Gear for Real Conditions

Scuba gear doesn’t get a trial run. From the first time you use it, it’s got to perform perfectly, no matter the conditions, from saltwater to current, in cold water, or with low visibility. 

Cressi designs equipment with that baseline in mind. Engineers test gear on repeated dives and in real conditions. Regulators need to deliver clean, clear airflow. BCDs must vent when you expect them to, and computers should be readable at a glance, not after a few seconds of interpretation. Everything must work 100% of the time.

That focus shapes how Cressi approaches design from the beginning. Features aren’t added for show; they’re built to address real-world conditions that divers face underwater.

Designing for the right conditions

Different dive environments require different things from gear. A regulator designed primarily for warm-water dives faces different stressors than one that’s meant for cold water or high-sediment environments. 

In cold water, for example, rapid gas expansion inside a regulator can drop internal temperatures and increase the risk of freezing. Regulators designed for the cold typically use environmental sealing in the first stage to keep water from entering sensitive internal components. A sealed regulator helps prevent freezing and also keeps contaminants out of the spring chamber.

Saltwater diving presents a different challenge. Even with regular rinsing, salt will dry and crystallize around moving parts, threads, and adjustment points. Gear that’s used frequently will spend years exposed to salt, sand, and fine particulate matter. 

To address that exposure, Cressi uses corrosion-resistant materials like marine-grade brass and stainless steel in high-wear components. These materials resist corrosion and fatigue over time, helping regulators maintain consistent performance, even after hundreds of dives.

Design also considers the realities of recreational diving itself. Divers want equipment that performs reliably without constant adjustment. Balanced regulators help maintain steady airflow as tank pressure changes, while simple adjustment mechanisms prevent unnecessary complexity.

Together, these choices reflect a practical goal: equipment designed for the environments divers actually encounter, whether that means cold water, warm tropical reefs, or years of repeated use in saltwater.

Designing for dexterity and control

Divers interact with their equipment constantly during a dive. Adding air to or venting a BCD, adjusting a strap, clipping off a torch, or re-securing a dangling octopus all happen while maintaining buoyancy and situational awareness.

Executing those actions must be simple and predictable, regardless of a diver’s position in the water column. Inflator buttons should respond consistently with each press; D-rings should be easy to access; and dump valves should release or add air smoothly with one touch. 

Simple gear that’s easy to operate and maintain is baked into Cressi’s DNA, says Pietro Micillo, Cressi designer.

“Simplicity is more reliable for several reasons,” he says. 

When a device has fewer functions and components, there are fewer parts that can break or malfunction. Simplicity [also] reduces the complexity of the system, making it easier to understand and repair.”

This is why Cressi BCDs use clearly shaped controls and predictable inflation systems. Each press of the inflator adds a measurable amount of air rather than a sudden burst. Dump valves are positioned so air can be vented from multiple body positions, whether the diver is upright or swimming horizontally.

When controls behave consistently, buoyancy adjustments become routine rather than reactive. Divers spend less time managing their gear and more time focusing on the dive itself.

Designing dive computers for clarity

Most divers glance at their computer regularly throughout a dive. It becomes part of the rhythm of being underwater, much like checking a watch. Divers must be able to easily track depth, bottom time, ascent rate, and remaining no-decompression limits as their dive progresses.

Because those checks happen frequently, readability matters. Information should be visible at a glance without needing to stop and study the screen. Cressi uses large numerals, high-contrast displays, and straightforward navigation to make it easy to confirm depth or time quickly.

Some Cressi dive computers also use a one-button interface to further simplify the process. Instead of scrolling through complex menus, divers move through functions in a clear sequence and confirm settings with a short press. 

“A simple device can concentrate on a single function, making it perform better and more efficiently,” says Micillo. “A simple device is often easier to use, even for less-experienced divers.”

When information is easy to access, divers can keep track of their dive while still enjoying everything happening around them.

“Simplicity can be more reliable because it reduces complexity, errors and the likelihood of failure, making the device easier to use and maintain.”—Pietro Micillo

From feedback to refinement

Although lab data measures performance, it can’t fully replicate how gear behaves during repeated dives, travel, and long-term exposure to the elements. Instructors, technicians, and ambassadors provide feedback after use and testing in real underwater conditions. In Cressi’s case, most of this takes place in open water about 40 minutes from the company’s Genoa headquarters.

“When we design new diving equipment, or even just check standard equipment already on the market, we carry out numerous tests in real-world conditions,” says Micillo.

We have two boats available in the port of Santa Margherita Ligure. The preferred site for product testing dives is the Portofino Marine Park, which offers an incredible variety of dive sites at different depths. Tests are carried out throughout the year so that the equipment can be tested in both cold and temperate water.

We simulate a normal recreational dive of around 45–50 minutes, during which we focus on checking every tiny detail of how each piece of equipment functions. This stage is absolutely crucial in the product development process; in fact, it allows us to immediately verify in the field whether anything is amiss or could be improved.”

Sometimes adjustments are small after tests are completed—controls get a little bit larger, more D-rings are added, digital layouts are simplified. But in every design decision, the goal is to remove friction between the diver and the equipment.

“This is undoubtedly the best part of our job...moving from the design stage to actual use at sea.”—Pietro Micillo

Why this matters underwater

Underwater, equipment either works or it doesn’t. A regulator delivers air smoothly or it doesn’t. A BCD vents when you press the dump valve or it doesn’t. A computer shows you depth clearly or it doesn’t.

Cressi designs gear with the assumption that it will be used often and in a wide range of conditions. Saltwater, repeated dives, travel, and years of regular use all shape how equipment is built and tested.

When gear works consistently, breathing becomes automatic; buoyancy adjustments become routine; and checking a computer takes only a quick glance. Attention shifts where it belongs, to the dive itself.

That’s the real goal of good design: equipment that works so reliably you almost forget it’s there.