Santi BZ400X Ladies First Undersuit
Santi BZ400X Ladies First Undersuit

Santi BZ400X Ladies First Undersuit - XS

Sale price£235.00 Regular price£470.00
Save £235.00

1/2 PRICE SALE - LIMITED STOCK - Size XS. The Santi BZ400X Ladies First Undersuit is designed for women who value individuality and comfort even during long, demanding dives at temperatures less than 7°C.


Dispatched in 1 to 2 days

Contact Form & Details

How can we help?

If you need to contact us for any issue or assistance, you can do so online by filling out the online Contact Form, emailing us at or calling us on +44(0)1305 824 555. If it's about a purchase you've made for us please also include your order number.

Our brick-and-mortar store Underwater Explorers based on Portland, Dorset is staffed 7 days a week, including weekends and bank holidays. As it's an active store visited by divers from around the country and world regularly, if we can't make it to the phone for any reason please leave a message and we'll get back to you asap.

Any queries are usually answered the very same day and at most within 24 hours.


Why Portland?

We’re located on the Isle of Portland (in Dorset) because Portland has been one of the most popular scuba diving locations in the United Kingdom even before we set up operations here back in the year 2000.

On one side, we’re minutes away from the sheltered waters of Portland Marina and Harbour, while on the other, it’s just a brief walk to reach our famous scuba diving destination Chesil Cove and start of the 16-mile-long Chesil Beach.  

Portland’s location makes it ideal for scuba diving, freediving, snorkelling and other surface water sports activities. 

Check out how many wrecks we have around here by clicking on Scimitar Diving's Wreck & Dive Sites chart!

Alongside dive clubs, many instructors and dive schools travel here to train and offer scuba diving certification ranging from open water diver to mixed-gas tech diving or rebreather diving levels.

Whether you’re doing a boat dive from Portland Marina or Castletown or a shore dive at Chesil Cove, Portland is well known for offering many possibilities: Reef diving to wreck diving and night diving, underwater photography or underwater videography. Anything other than cave diving is possible here.

Likely being the best-stocked diving shop in the UK, at Underwater Explorers we offer in-store scuba diving equipment advice and sales, as well as gas fills, to locals and visitors (read About Us).

But... If you’re googling “scuba diving shop near me” like some, look no further, there's DirDirect online.

Here at DirDirect, we list our cutting-edge equipment for worldwide delivery and we’ve got you covered whatever your level of diving: We’re your local dive store wherever you are in the world.

All that with over 20 years of experience especially in technical diving, from training to equipment, advice and sales.


Underwater Explorers, Unit 1, Maritime Business Centre
Mereside, Portland, Dorset, DT5 1FD



The Santi BZ400X Ladies First Undersuit with pink details is designed for women who value individuality and comfort even during long, demanding dives at temperatures less than 7°C.

Built on the experience of leading divers and instructors of recreational and technical diving. The modern, well-fitting, feminine cut is complemented by colour details that allow you to create the perfect combination of the Ladies First Undersuit.

Santi BZ400X Ladies First Undersuit features

  • Fuschsia details
  • Two large pockets on thighs
  • One inside pocket on the left chest
  • Comfortable zipper opening flap on the bottom
  • Tapes, which supply air to dry gloves
  • Elegant and comfortable collar and yoke covered with softshell
  • Two-way zip
  • Reinforcing patches on knees, shoulders, and back made of Polyester
  • In waist-elastic gusset made of windproof fabric
  • Shoulder gussets allow more free movement
  • Inside suspenders
  • Wide (10cm) elastic ankle bands prevent moving up the legs

Best thinsulate material

Santi has used the best materials and available technologies for the BZ400X undersuit.

The Thinsulate™ BZ400 Insulation, recommended by leading fabric producers, provides effective insulation, resistance to moisture and breathability. It is one of the best insulation which can be used in undersuits.

It is compressed, does not take up too much space under the drysuit, and does not restrict the diver’s movement.  It has a net layer, which makes the BZ400X even more durable and practically indestructible.

  • Thinsulate™ BZ400 Insulation
  • Lining: Micropolar weight 420g/m, warmth: 1.80 CLO
  • Outside layer: Polyamide, Polyester
  • Weight: 2.1 kg

SKU: 2003LF-01-50