Santi BZ420X Heated undersuit

SANTI BZ 420X Heated Undersuit – Ultimate Warmth for Extreme Dives

The SANTI BZ 420X Heated Undersuit is the upgraded version of SANTI's best-selling thermal undersuit, delivering even greater warmth and efficiency for drysuit divers. Designed for extreme conditions, it features improved insulation, a more efficient heating system, and an enhanced fit, ensuring unparalleled comfort during long or deep dives. This undersuit is an essential component of the SANTI heating system, requiring a Thermovalve or Connector and an external battery for safe, effective heating underwater.

SANTI BZ 420X Heated Undersuit Specifications

Heating Performance:

• • Works exclusively with SANTI Thermovalve or SANTI Connector
  • 14Ah BluePower battery: Up to 1 hour 30 minutes of heating
  • 28Ah BluePower battery: Up to 3 hours of heating
  • Maximum heating power: 110W
  • Maximum heating temperature: 45°C

Material & Construction:

• • Inner layer: 290 g/m² for enhanced thermal insulation
  • Outer layer: 420 g/m² for durability and heat retention
  • New smooth inner material for effortless donning and doffing
  • Quilted "brick" pattern for improved flexibility and body fit
  • Elastic waistband for comfort and freedom of movement

Functional Features:

• • Heating elements strategically placed on the torso, thighs, and arms
  • Waterproof, flexible connector compatible with other SANTI products
  • Extra pocket for power cables for easy management
  • P-valve openings on both sides as standard
  • Cuffs with straps to allow air release and prevent sleeve slipping
  • Water-resistant cuffs for added protection
  • Two-way front zipper for convenience

SANTI BZ 420X Heated Undersuit Details

The SANTI BZ 420X Heated Undersuit is designed to provide maximum warmth even in the harshest environments. The upgraded cable layout ensures more even heat distribution, while its improved fabric structure enhances insulation, making it an ideal choice for long dives, deep explorations, or ice diving. Even when the heating is turned off, the undersuit retains its insulating properties, keeping you warm throughout your dive.

Take a closer look here

If this isn’t the undersuit you’re looking for, check out our Heating Systems Collection or explore the full SANTI Range for more options.