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Santi Heated BZ400 Undersuit

Santi Heated BZ400 Undersuit

Regular price $1,899.95 AUD
Regular price $1,990.00 AUD Sale price $1,899.95 AUD
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The SANTI BZ400 Heated Undersuit is designed as a part of the complex heating system consisting of at least an undersuit, SANTI Thermovalve or SANTI Connector and an external battery. This configuration allows a diver to wear the undersuit under the drysuit without dangers associated with internal batteries.

The heating undersuit outer shell is made of abrasion and tear resistant polyester Thinsulate™ 3M BZ 400 layer and micro fleece layer inside. The Heating undersuit is designed to be worn on top of thin form fitting thermal wear. It is not recommended to wear on naked body. In this configuration the majority of the heat output is transferred directly on diver’s torso, back and thighs.

Breathable Thinsulate fabric allows comfortable body heating and redirection of body sweat to the outside. Undersuit has high thermal properties even if it is switched off.

Available sizes:

Made To Measure option available.

Technical info:

  • maximum heating temperature 45°C,
  • maximum heating power: 110 W,
  • works with the following batteries:
    24Ah battery: 2h30min ~ 3h of heating,
    battery BluePower 14Ah: 1h30min of heating,
    battery BluePower 28Ah: 3h of heating.
  • works only with the batteries of maximum voltage of 12V,
  • safety switch preventing from overheating and too strong current,
  • made of Thinsulate™ BZ400 (420g/m2),
  • made of fully breathable materials,
  • keeps you warm even when heating is switched off,
  • regularly distributed heating wiring that allows you a free movement,
  • warms up the whole torso, thighs and arms,
  • extra pocket for the wire ends,
  • waterproof plug, compatible with other SANTI products, flexible and overheating resistant wires,
  • additional wires integrated to plug in the heating gloves in standard,
  • P-valve holes on both sides in standard,
  • two sides pockets,
  • water-resistant cuffs,
  • tapes which supply air to the dry gloves,
  • two-way zip.

*We offer custom-made undersuit service (+AU$179.95), any queries, kindly contact us at or 02 99693563.*

Kindly note that the custom made undersuit may takes between 6-10 weeks for delivery.  Standard size may takes 3-4 weeks for delivery if not available in stock.

Works only with SANTI Thermovalve and SANTI Connector.



  • Swallowing may lead to serious injury in as little as 2 hours or death, due to chemical burns and potential perforation of the esophagus.
  • If you suspect your child has swallowed or inserted a button battery immediately call the 24-hour Poisons Information Centre on 13 11 26 for fast, expert advice.
  • Examine devices and make sure the battery compartment is correctly secured, e.g. that the screw or other mechanical fastener is tightened. Do not use if the compartment is not secure.
  • Dispose of used button batteries immediately and safely. Flat batteries can still be dangerous.
  • Tell others about the risk associated with button batteries and how to keep their children safe.

International Shipping

For all offshore islands and international orders, a member of staff will contact you with a delivery estimate including International freight charges. Please contact customs or your local postal service as your order may be delayed for inspection or duties/taxes may apply which are not paid for by Infinity Dive. This is applicable to all international shipping methods.

Duties and Taxes

International purchases are sold free of Australian GST. However, depending on which country the items will be dispatched to, there may be additional taxes or import duties imposed at the receivers end. Infinity Dive is not liable for these charges and it is up to the customer to liaise with the Customs regarding their delivery.

Out Of Stock Policy

We will get in touch with you if the product was out of stock.

If the product was out of stock in the entire Australia, the delivery time may over 2 months.

Its depends on the ETA provided by the Brand Agent.

Cancellation Policy

Order cancellation
We move fast to get our orders packed and dispatched as fast as possible. If your order hasn't already been dispatched, we should be able to cancel your order.
  • Please note that some orders may not be able to be changed or cancelled once the order has been accepted by infinitydive.
  • If you need to cancel an online order that has not yet been shipped, please contact us.
  • No order shall be binding until it is accepted by InfinityDive. An individual contract for the supply of Products, on these policies, is formed on acceptance by InfinityDive of an order from the Customer.
  • InfinityDive reserves the right to accept any order in whole or in part. Where we makes a part delivery of any order, such delivery shall constitute a separate contract. No order may be cancelled or varied after acceptance by InfinityDive.

In-store pickup policy

In Store Pick up orders will be available for collection in store for a period of 1 month if the product is in stock;  if the order isn’t collected by this point, $10/day storage fees may apply unless a prior arrangement is made with InfinityDive.
Trip / Event cancellation policy
No refund for cancel request made less than 24 hours.
      Courses cancellation policy
        1. There will be a payment deadline announcement to all participants, no late fee will be accepted.
        2. If you cancel or transfer your course due to personal reasons, you need to pay an administration fee starting from $98, which will incur within the paid fee.
        3. If the new course is of a higher value than the original booking, the difference must also be paid. No exceptions.
        4. If special circumstances or ocean conditions cause the necessary cancel on activities of the day, our students or participants who paid will get the fee convey into credit point. No direct cash return.
        5. If any paid fees are cancelled after 14 days due to personal reasons, the full payment will be converted into company credit points. If cancelled 7 days before departure, fee will refund by 50% deducting from the conversion payment company credit points. If the payment is made within seven days before departure, there will be no refund.
        6. Before payment for any activity or course, the company reserves the right to change the price, and participants must take the initiative to confirm the relevant changes.
        7. If an emergency medical condition manifests within 24hrs of your course start time, proof must be provided in order to transfer your course at a reduced rate depending on the case.
        8. If you have indicated yes to any of the questions on our dive conditional from, then one will need to be provided at the time of booking or 14 days prior to the course start date. Once you are fit to dive unconditionally, cancellation procedure will apply the above conditions. Failure to do so will result in forfeit of the course and rebooking will be at full cost.

        Special Conditions

        Special circumstances will deal in case-by-case manner as such medical conditions, verbal instructions, unconditional payment, etc.

        Credit points

        The credit points of the company after the refund can be purchased for any consumption within the company, and it will take effect forever indefinitely.



      Please note: Due to lighting and monitors,the items colours may be slightly on the error with the pictures.
      We ensure that we provide the style and the picture is the same.

      Infinity Dive do not reponsible for any custom duty or import tax.

      Thank you very much for your understanding!

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