Proteus II - Improved fit and thermal performance

The PROTEUS II is a worthy successor to the original Proteus suit. Available in 3mm and 5mm thicknesses, the Proteus II is set to redefine the warmest suit in its class.
Water ingress is minimised by a number of design features. Glideskin wrist seals and the now famous hydrolock inner neck seal combine with watertight seams which are double glued, blindstitched and taped to keep the water out.
Thermoflex linings throughout the suit provide excellent comfort and thermal protection.
Additional Hexcore linings on the body core provide enhanced thermal performance where it is most needed for prolonged water exposure.
Available in 3mm and 5mm versions.

Fourth Element
Developed using a combination of superstretch and thermocore neoprene, the Proteus wetsuit is designed specifically for scuba diving and offers surprising thermal protection and comfort during a dive. Incorporating the unique hydrolock neck seal, glideskin seals at the wrists and plasma seals at the ankles, the Proteus wetsuit eliminates almost all water ingress and is rated the warmest diving wetsuit in its class by Sport Diver Magazine.

Proteus 3mm Ideal for use in warmer waters, this lightweight neoprene diving wetsuit offers surprising thermal protection and comfort and is rated as the warmest diving wetsuit in its class by Sport Diver Magazine.

Proteus 5mm Ideal for use in temperate to warm waters, this versatile dive wetsuit incorporates superstretch neoprene on the arms and legs where mobility is required, and thermocore compression resistant neoprene on the body core panels. The 5mm Proteus offers outstanding thermal protection and comfort with excellent ease of movement.

Durawear Patches Applied to the critical areas of the Proteus to minimise the abrasion for other equipment at the shoulders and around the waist. The stippled pattern on the chest of the suit maximises flexibility and thermal protection and helps to speed up drying time. 

Glideskin Seals Smooth Glideskin at the wrists, and plasma seals at the ankles provide a highly effective barrier to water ingress and eliminate water flush through. In donning the suit - to avoid damaging the material, turn the seals up before putting the suit on and and roll them down once the suit is on.

Hydrolock Neck Seal With over 8 months of prototyping, this features a unique combination of glideskin, smoothskin and standard neoprene. The double seal virtually eliminates water ingress into the suit. An internal back panel prevents water entering through the zip from reaching the back. The neck collar is lined with glideskin neoprene and fits snugly around the neck giving a smooth, complete seal.


Prices (pre 8% tax)
3mm - JPY 58,000
5mm - JPY 68,000


Here is a link with great information about layering, water temp recommendations, donning, care, etc.

Proteus II Sizing and Tech info