Our Suits

Eco Friendly Neoprene Drysuits

Hyper-compressed Neoprene has been developed by YAMAMOTO, aiming at the most stringent demands of both deep sea divers and Drysuit producers worldwide, aiming at creating the best compressed neoprene material yet available, with excellent eel! recovery and memory, with optimum resistance against deep water pressure compression, and at the same time maintaining that all important heat insulation factor and crucial body core thermal protection.

Hyper Compressed

Neoprene is a “TRUE” Compressed Neoprene. Many of the “COMPRESSED” Neoprene materials and Dry Suits that are currently being offered on the market, are in fact made with HIGH DENSITY Neoprenes, which are not Compressed. They are merely stiffer more solid neoprene rubber compounds, which contain less amounts of Nitrogen Gas Cells, and therefore provide less Thermal Insulation.

How it's made

YAMAMOTO HYPER-COMPRESSED is produced by expanding a Master Slab of regular dive grade Neoprene with ‘Nitrogen Gas Closed Cells’ up to 30mm thickness, and then COMPRESSING it in a heated pressure press back down to 15mm thickness. We then split the resulting Compressed Master Slab to the client’s desired thicknesses. These split thicknesses in effect have double their thickness factor amount of thermal insulation.

The Difference

YAMAMOTO’s production method creates a true Compressed Neoprene which has an excellent compression resistance and memory/recovery, and at depths of around 40 meters a diver can really notice the difference in WARMTH & THERMAL PROTECTION, where other ordinary High Density Neoprenes are basically COLD ! HYPER-COMPRESSED is available in all thicknesses 2mm, 2.5mm, 3mm,3.5mm 4mm, 4.5mm, 5mm, etc, to clients preference.

Special Lining

HYPER-COMPRESSED can be lined with standard NYLON, or many of our specialized heavy duty fabrics, such as KANOKO 505, TECHNO 500, SPANDURA 800, all of which can be treated with our special PU Resin High Abrasion Resistant Coating CORALTEX I!, or lined using Yamamoto’s superior TITANIUM ALPHA thermal coating.

Why is Yamamoto Neoprene the best

As a result of a series of diastrophism over a vast span of time beginning approximately 80 million years ago. a rock situated in the present-day Hawaiian Islands traveled a long way to Mt. Kurohime in Niigata. Prefecture, Japan. It was us, YAMAMOTO CORPORATION, who first shed light on this unique rock. Charmed by its mysteriousness, we have continued to create novel, business enterprises. Being composed of 99.7% calcium carbonate, this rock is miraculously free from almost all impurities. Using this rock as a starting material, we have developed a number of high-quality materials that have found applications in various fields such as; sports gear, medicine and fashion. Many of these have lead to the revolutionary new use of materials in these fields. Now, we have inspired yet another life into these rubber materials. In the evolution from technical rubber to Bio Rubber materials, our novel scope of activities has just begun.

Progressive Technology

We have been emphasising with our pride that YAMAMOTO Neoprene is not petrochemicals but is from Limestone base polymer with 99.7% calcium carbonate and this point also is emphasised for greater acceptance in the market of the medical products made of our neoprene rubber. It is not true that calcium carbonate foam is not as clean and environmentally friendly even from the point of its manufacturing process. We don’t use at all the petroleum as the important resource. The quantity of heat for processing and producing our raw materials is merely one tenth of that being used for refining the petroleum and the used heat is used for the nursery of eels. The source of heat is from the used tires and the electric power is generated from the several dams and power stations constructed downward the high mountain range. This special technology to convert the limestone to the rubber is to be really environmentally clean and friendly.
In addition, as we informed, our YAMAMOTO Neoprene material is not petrochemicals but are from Limestone based on 99.7% calcium carbonate produced in the mountain for the cement materials. It reserve is estimated possibly available enough for next 3,000 years. Throughout the processing and production, only the hydro-electricity is employed, free from environmental pollution. The waste heat is made use for the nursery of eels.
The material can be processed, to its low viscosity at low temperature. It is precisely controlled at below 0.5 Centigrade. Special compound to match limestone.
The brief processing method of the limestone is to make acetylene gas spring up by burning the tire and to liquefy it by the chemical polymerisation, then to dry it to chips.
Japanese special technology to convert the limestone to the rubber is to protect the Earth environment.

Newly born production

This new- wet & dry suit material which consists of a five(5)-later structure, neoprene rubber coated with Titanium Alloy and then laminated with synthetic fiber jerseys. As illustrated, the Titanium Alloy is a super thin film which provides effective heat retaining and heat retaining properties. In fact, a double lined material with Titanium Alloy will be 40% warmer than regular neoprene’s. The stretchability, feeling and wear comfort remains the same as conventional materials. This makes it possible to use a reduced thickness of neoprene, for instance 3.0mm in lieu of 5.0mm, obtaining the same thermal protection. Thickness and weight reduced by 40% retains the same warmth. Because of its lower buoyancy, divers do not have to use so many weights and rivers with more safety. It is now possible to make sure of a lighter weight, with more comfort and ease of movement, providing the user with less fatigue and comfort. “This Hi-Tec composite material leads the way in this new century.

Benefits of Neoprene Drysuits


No Coldness

The coldness encountered by wetsuit divers on repeat dives does not affect the Drysuit diver since the body’s core temperature of 37C will not have been as affected by earlier dives as that of a wetsuit diver.

Clear Mind

The warm and comfortable diver will be a clearer thinking one, whose air consumption is likely to improve. Because the vital organs within the torso are warm the extremities of hands and feet retain circulation and stay warmer.

No Struggling

Our Drysuits are easily and very quickly donned and removed. No more struggling into a wetsuit and then having that constricted feeling. The fact is that our Drysuits are as much to do with the ease of diving as the water temperature.

Full Mobility

Your mobility in the water is unhindered and free, unlike the ‘baggy’ type of shell suits which can have a distinct drag factor.

No Wind Chill

The Drysuit diver has the added bonus that because the body is dry, of being far less affected by wind chill factors.

Dive Year Round

In our Drysuits you will want to dive all the year round. Three Winter dives a day are a reality.

Good Quality

Not least, our Drysuits look smart and are extremely well made and backed by local service.

No Specialist Undergarments

Specialist undergarments are not required, except in the most extreme conditions.

More Diving

The Drysuit diver really scores on repeat dives when the suit is still just easily and quickly donned. No more fighting your way into that damp wetsuit.

Some of our customer comments

Membrane Drysuits

Membrane dry suits are made from thin materials, and thus by themselves have little thermal insulation. They are commonly made of vulcanized rubber, or laminated layers of nylon and butyl rubber. Membrane dry suits typically do not stretch, so they need to be made oversized and baggy to allow flexibility at the joints through the wearer’s range of motion. This makes membrane dry suits easy to put on and get off, provides a great range of motion for the wearer, and makes them comfortable to wear for long periods.

To stay warm in a membrane suit, the wearer must wear an insulating undersuit, today typically made with polyester or other synthetic fiber batting. Polyester and other synthetics are preferred over natural materials, since synthetic materials have better insulating properties when damp or wet from sweat, seepage, or a leak. (Except for wool, which is an effective insulator when damp, albeit bulky.)

Reasonable care must be taken not to puncture or tear membrane dry suits, because buoyancy and insulation depend completely on the gas pockets in the undersuit (whereas a wetsuit normally allows water to enter, and retains its insulation despite it). The dry suit material offers essentially no buoyancy or insulation itself, so if the dry suit leaks or is torn, water can soak the undersuit, with a corresponding loss of buoyancy and insulation.

In warmer waters, some wearers wear specially designed membrane dry suits without an undersuit. These are different in design, materials, and construction from dry suits made for cold water diving.

Membrane dry suits may also be made of a waterproof and breathable material to enable comfortable wear when out of the water for long periods of time. Sailors and boaters who intend to stay out of the water prefer this type of suit.

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