Seal Armor System – the zippered cuff system allows the flexibility to use any mfg"s dry-glove ring system. • Warm Neck Valve – Now we have improved our frequently imitated Warm Neck design with the addition of a valve to drain the seal area when you surface. • Form Moulded Velcro Tabs – For adjusting the Warm Neck Waterproof uses moulded poly-urethane Velcro tabs with Japanese Velcro Plush for maximum hold and good looks. • Vented Hood, HAVS. A separated Vented hood fits underneath the warm neck collar. Our exclusive Hood Air Venting System uses one-way valves to vent annoying air buildup in the hood. • The HAVS hood features a 7mm double layered protection in critical heat loss areas and glide skin seals for the neck and face. • Because of the shaping of the SEDNA, no seams are to be found in the under arm area or in the crotch area, where wrinkling can otherwise cause wearing. • The boots are extended in the rear calf area, which facilitates an easy step in. • Kevlar reinforced soft boots ensure ultimate strength and flexibility. • The Boots are cut on an angle to minimize ankle and calf stress while finning. • High Visibility Logo reflective logos on the sleeves and in the neck part. • Dynat dry zipper that is located horizontally over the shoulders. • Chill Guard. Under the Dry Zip, it not only keeps body heat in, it also keeps your undergarments out of the zipper for trouble free operation. • Laminated Spantex Lycra nylon coating on the 3,5mm HEIWA Hi-Dense Neoprene. • A Seat that Grips – Poly-urethane embossing in the back provides a no-slip grip and integrated abrasion protection. • Knee Guards – Anatomically shaped, 3-Dimensional, injection moulded knee/shin guards provide hard-core protection without compromising comfort and flexibility. • Anatomical Sculpting – with pre bent arms and legs SEDNA provides an anatomically sculpted suit designed to fit human movement. • Each suit is tested by an overpressure check. • A Waterproof 1000 CORDURA bag is also supplied as standard, which can be carried as a backpack. • SI-TECH valves, swivelling inlet valve and automatic outlet valve.