The Santi BZ420X Heated Undersuit is a thermal garment designed for cold-water diving, combining high-performance insulation with integrated heating elements for adjustable warmth and comfort.

• Heating system: Integrated heating elements in the torso, thighs, and arms with adjustable heat output.
• Insulation: Thinsulate BZ400 by 3M and Thermo Pile 100 fleece for excellent warmth without excessive bulk.
• Design features: Ergonomic construction with reinforced upper chest and shoulder areas, thumb loops for dry glove systems, two-way zipper, wide ankle bands, and a waist gusset for improved fit and mobility.
• Storage: Multiple pockets for small items.
• Compatibility: Works with Santi Thermovalve and drysuit connector systems.

Specifications

• Temperature range: 0°C to 17°C
• Warmth rating: CLO 1.80
• Weight: Approximately 2.1 kg (Men’s size L)
• Maximum heating power: 110 W
• Maximum heating temperature: 45°C

The BZ420X provides reliable thermal protection for cold-water dives by combining effective insulation materials with integrated, adjustable heating.