Santi Heated Flex 2.0 Full Undergarment

The Flex 2.0 heating undersuit is designed as part of complex Santi heating system which consists of such items as heated undersuit or heated vest, valve thermoconnector or thermovalve and external battery. While using the same inner heating technology as in BZ400 heated model, this undersuit is light and flexible, which improves divers flexibility and bulk comfort under a drysuit.


This configuration allows a diver to use the heating system without necessity of using any additional valves and without any dangers associated with internal battery canisters.

Made of high quality 180g / m2 Climashield Contur fabric with additional insulation of the chest with a double layer of insulation, provides full flexibility of the material on every level which translates into exceptional mobility and smaller volume compared to our model made of Thinsulate insulation.

The undergarment contains very efficient heating wires that provide optimal thermal comfort during long and cold dives. In this configuration, most of the generated heat is passed on directly on the diver’s body. We highly recommend this undersuit to those, who look for thinner alternative for a heating undersuit, plan shorter dives in cold waters or long demanding dives in warmer waters.

The newest version of Santi heated undergarment, thanks to new, non-quilted fabric quality provides more warmth towards the body. This generates better thermal feeling and keeps the heat trapped closer to the body for longer.

It is advised to wear the undersuit on top of thin thermal or wool base underwear. In this configuration the temperature is directed straight to a diver’s body. The Undergarment should not be worn directly on naked skin due to safety and hygienic reasons.


  • handy pocket on waist for power cord,
  • p-valve hose opening,
  • non – soaking net cuffs with rubber loops for thumbs,
  • elastic gussets under the armpits,
  • two side pockets,
  • elastic waist belt,
  • two – way entry zipper,
  • foot straps that hold the feet while dressing,
  • maximum heating temperature: 45ºC,
  • maximum heating power: 110W,
  • operating time on 24Ah battery: approx. 2h30min – 3h,
  • Climashield Contour 180g/m2 thermal insulation,
  • safety switch preventing from overheating and too strong current,
  • heating wire covered with ultra-soft, silicone isolation resistant to breaking,
  • innovative, synthetic power cable resistant to high temperatures and cuts hidden in a handy pocket,
  • ergonomic nesting and wires layout inside,
  • built in heating glove wires,
  • special undersuit bag,
  • available for ladies in “Made to Measure” option.


Works only with SANTI thermovalve and SANTI thermoconnector.