SANTI Flex Series Undersuits Compared
The Santi Flex undersuits are not just about keeping warm; they're about enhancing your dives with superior flexibility, clever design, and customised thermal performance.
Each undersuit in this innovative range is designed to reduce bulk, maximise mobility, and deliver the precise level of warmth you require, making every descent more enjoyable and efficient.
Santi has meticulously designed these undersuits to suit varying water temperatures, ensuring you remain comfortable without compromise.
Let's briefly explore how the Flex line evolves from the Flex 80, Flex 190, to the Heated Flex 2.0, providing an ideal solution for every drysuit dive, from a gentle touch of warmth to full heated protection.
SANTI Flex 80: The Lightweight Layer
The Flex 80 is Santi's lightest and most breathable undersuit option within the Flex series. It is mainly designed for drysuit diving in warm water, suitable for water temperatures of 14°C and above.
It is excellent as a standalone undersuit for warmer drysuit divers or as an extra layer under a thicker undersuit in colder conditions. The Flex 80 features a lighter fabric weight of 290 g/m², focusing on moisture-wicking, fast drying, and breathability.
Best for: Divers who prioritise agility and minimal bulk in warmer waters, or those looking for a high-performance base layer.
Choose the Flex 80 for its agility and breathability in warmer, drysuit conditions, or as a super-comfortable base layer.
Santi Flex 80 Undersuit Specifications
- Super-flexible fabric ensures exceptional fit and comfort.
- Lightweight and breathable construction supports active diving.
- A refreshed, modern design offers updated finishing.
- The high stand-up collar provides extra thermal protection.
- Elastic cuffs prevent sleeves from riding up.
- An adjustable waistband features an internal elastic band.
- A two-way diagonal zipper adds convenience.
- New SANTI logo branding appears on the chest, sleeve, and back.
- Material: 91% polyester, 9% elastane; "Scale" Fabric: 100% polyester.
- Weight: 290 g/m²; "Scale" Fabric: 300 g/m².
- Comfortable for one hour in water 14°C and above.
- Available in 16 men's sizes, 12 women's sizes , and Made to Measure .
SANTI Flex 190: The Versatile All-rounder
Stepping up in insulation, the Flex 190 offers a balance of warmth and flexibility for cooler conditions, making it comfortable for dives in waters ranging from 7 °C to 14 °C.
Featuring Climashield® Contour insulation at 180g/m², the 190 offers an optimal warmth-to-bulk ratio with a warmth rating of 0.96 CLO.
Best for: Divers seeking a highly flexible, durable, and warm undersuit for a wide range of cooler water temperatures, who value comfort and a high-quality, modern design.
Choose the Flex 190 for dependable warmth and ease of movement in moderately cold water.
Santi Flex 190 Undersuit Specifications
- Easy to wash and dry – washing provides even better thermal efficiency to the insulation
- Five practical pockets (three in the front and two in the back)
- Two-way zip for P-valve
- Heating cords hole in right pocket
- Soft, cotton cuffs with thumb holes to prevent sleeves from pulling up
- Wide elastic ankle bands prevent moving up the legs when setting up the drysuit
- Reinforcing patches on knees and elbows made of Polyester
- Great soft feeling next to the skin
- Lightweight and durable
- 100% recyclable – this one-of-the-kind insulation includes no Acrylic, which makes it recyclable
- Practical implementation of the zip (from right arm to left leg)
- Innovative, modern design
- It can also be used for other sports
SANTI Heated Flex 2.0: Ultimate Flexible Warmth
As the name indicates, this is SANTI’s advanced, flexible solution for maximum warmth in colder environments, featuring an efficient heating system powered by an optional battery.
SANTI recommends the Flex 2.0 Undersuit for those seeking a thinner alternative to a bulkier heated undersuit, especially for shorter dives in cold waters or longer, demanding dives in warmer waters.
The suit utilises Climashield® Contour insulation at 180g/m², similar to the Flex 190 in its basic insulation properties but combined with integrated heating wires.
Best for: Cold-water divers and those requiring consistent, active warmth for extended or challenging dives, but who want to avoid the bulk of the BZ420X heated undersuit.
Go for the Heated Flex 2.0 if you dive in cold water conditions or need active, adjustable warmth for extended or challenging dives, and are committed to a full heating system.
Santi Heated Flex 2.0 Undersuit Specifications
- Operating time on 28Ah battery: approx. 3hrs
- Built-in heating glove wires
- Handy pocket on the waist for a power cord
- P-valve hose opening
- Net cuffs with rubber loops for thumbs
- Elastic gussets under the armpits
- Two side pockets
- Elastic waistband
- Two-way entry zipper
- Foot straps
- Maximum heating temperature: 45ºC
- Maximum heating power: 110W
- Climashield Contour 180g/m2 thermal insulation
- Safety switch prevents overheating
- Wires covered with ultra-soft silicone resistant to breaking
- Power cable is resistant to high temperatures and cuts
- Ergonomic nesting and wire layout
- Made-to-measure option
Each Santi Flex undersuit is crafted with quality and diver comfort in mind, allowing you to tailor your thermal protection precisely to your diving adventures.
