The Santi BZ420X Heated Undersuit is a thermal undersuit for cold-water diving that combines integrated heating elements with high-performance insulation to deliver adjustable warmth and ergonomic comfort.

• Heating system: Integrated heating elements in the torso, thighs, and arms with adjustable output. Maximum heating power 110W; maximum heating temperature 45°C.
• Insulation: Thinsulate™ BZ400 by 3M and Thermo Pile 100 fleece for effective warmth without excessive bulk or compression.
• Ergonomic design: Reinforced upper chest and shoulders, thumb loops for dry glove systems, two-way zipper, wide ankle bands, and a waist gusset for improved fit and comfort.
• Storage: Multiple pockets for small items.
• Compatibility: Works with Santi Thermovalve and drysuit connector systems.

Specifications

• Suitable water temperature: 0°C to 17°C
• Warmth (CLO): 1.80
• Weight: Approximately 2.1 kg (Men’s size L)