Product Highlights
Walls rigid enough to sit on
Moulded seating throughout
Quiet soak or full massage
Frees up the whole interior
Submersible spa light compatible
Award-winning dual circulation
Weatherproof protection
The Lush Caspian
Turn it down. Drop stitch walls firm enough to sit on, woven in Grey Herringbone, with the heater outside the tub so the whole interior is yours. Two speeds: up for a full bubble massage, or down to VertaCalm™.
Spread the cost from £49.99 a month, interest-free
Pay in 3 interest-free payments of £199.99
See all payment optionsHide payment options
- Pay in 3 Interest-free £199.99 × 3 Details
- 12 months 0% interest £49.99 a month Details
- Up to 24 months Plans to suit youGet a quote
Choose your plan at checkout. 18+, UK residents only, subject to status. T&Cs apply.
Payl8r monthly figure hidden until 24-month interest-free terms are confirmed.
Product Highlights
Walls rigid enough to sit on
Moulded seating throughout
Quiet soak or full massage
Frees up the whole interior
Submersible spa light compatible
Award-winning dual circulation
Weatherproof protection
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible.
-
Shipping Information
Free next-day tracked delivery for all spas via DPD, with an option for Saturday delivery available for an extra £9.99. Upon dispatch, DPD will provide you with a one-hour tracking window.
-
Customer Support
Our friendly customer service team is ready to help with your Spa or order questions.
Email us At: support@wavespas.com
Monday to Friday: 8:30am – 5:30pm
Saturday: 8:00am – 4:00pm
We aim to reply within 8 working hours, so you’ll never be left waiting too long. If you message us outside these hours, no worries - we’ll dive right back in as soon as we’re back online.
Thanks for your patience and for being part of our community
Experience ultimate relaxation
At Wave, our vision is to be the most trusted name in portable hot tubs. That's why we are proud to be the UK's highest-rated hot tub brand on Trustpilot.
The Wave Lush Caspian is built from drop stitch — the same construction used in high-pressure paddleboards. Inflated hard, the walls go rigid enough to sit on, giving a square spa that feels far more like a fixed installation than an inflatable.
It runs on our new external heater, which keeps the working parts outside the tub and frees up the whole interior for people. Built-in seating throughout, finished in a woven Grey Herringbone.
Available in 4-Person and 6-Person.
Effortlessly heats up to 40°C
From box to first soak
-
Set up
No tools
No tools needed.
-
Fill4 Person TBC6 Person TBC
With a garden hose at normal mains pressure.
-
Heat to 38 °C4 Person TBC6 Person TBC
From 10 °C tap water with the lid on.
-
Soak
Up to 40 °C
Keep the lid on between soaks to hold the heat.
Heating takes longer in cold weather. FrostFree™ protection switches on automatically below 5 °C to keep the pipes from freezing.
Heat-up times are worked out from each size's measured heat rate (variant metafield: Heat rate °C per hour). Fill time comes from Fill time (minutes).
Setup & guides
Set up in minutes, not afternoons
Clip it together, drop in the liner, connect the heater and fill. Most people are done before the kettle's boiled twice.
- 1Unroll it on a flat, solid surface
- 2Clip the walls together and drop the liner in
- 3Connect the heater, fill with a hose and switch on
Upload the owner's manual PDF to the product metafield (specs → Owner's manual) to switch the button on.
Where the massage comes from
Layout is illustrative. Seat and jet positions need checking against the supplier drawings in the spec pack.
Product details
Key Features
Dimensions
Technical Specs
What's in the box
Square Body
Integrated Heater
Easy Use Controller
Square Energy Saving Cover
Water care made simple
- After every soak Rinse the filterA quick blast with the garden hose, and pop the lid back on.
- Twice a week Test and balanceChlorine 3–5 ppm, pH 7.2–7.6. Test again before you get in.
- Each day you use it Top up the chlorineAbout 1.5 g for a 4 person spa, 2 g for a 6 person.
- Weekly Deep clean and shockSoak the filter in filter cleaner for an hour, then add a non-chlorine oxidiser.
- Every 2–4 weeks Fit a new cartridgeCloser to every 2 weeks if you're in most days.
- Every 1–3 months Drain and refillEvery 3–4 months if you only use it occasionally.
Trousse de départ pour produits chimiques et filtres à visser/filetés
Everything you need for clear, balanced water from your first fill.
Read the water care guideSizes & running costs
Pick your size, see what it costs
4 Person
Couples and small families
- Seats
- 4
- Footprint
- 169 × 169 cm
- Height
- 65 cm
- Water
- TBC
- Weight full
- TBC
6 Person
Families and entertaining friends
- Seats
- 6
- Footprint
- 200 × 200 cm
- Height
- 65 cm
- Water
- TBC
- Weight full
- TBC
- MassageAquaBubble™ bubbles
- SeatingAir Foam seats
- HeatingExternal heater · up to 40 °C
- ControlsWired controller
- LightingLED strip compatible
- FiltrationWaveFlow™ dual filtration
- Construction20 cm I-beam wall
- SetupTBC
- Power5.0 m cable
Running cost
—
a month to run
Thermal cover and foam mat included — cuts running costs by about 30%.
Estimated with the same figures as our running cost calculator. Your cost depends on your tariff, the weather, and keeping the lid on between soaks.
Space & power
Will it fit?
- Footprint
- 200 × 200 cm
- Height
- 65 cm
- Weight full
- TBC
- Power
- 5.0 m cable
Set it on a flat, solid surface: patio slabs, concrete or decking rated for the weight. A weatherproof 13 A socket with RCD protection, and no extension leads.
Compare Lite, Lush & Luxe
Wave Lite
Everything you need to get in the water
Wave Lush
Seated comfort and smart control
Wave Luxe
The full hydro-massage experience
4 Person | 156×69cm
6 Person | 184×69cm
4 & 6 Person | 190×190×69cm
4 & 6 Person | 190×190×69cm
Round
Rigid 8cm WaveEco™ foam wall
Square
Rigid 15cm WaveEco™ foam wall, Teslin outer
Square
Rigid 15cm WaveEco™ foam wall, Teslin outer
Single speed
Open floor to stretch out
Two speeds
Low for a quiet soak, high for a full massage
Two speeds
Low for a quiet soak, high for a full massage
4 jets, 2 intensities
Integrated pump, runs with or without bubbles
Cover plus separate inflatable lid (2 pieces)
Integrated lid & cover (1 piece)
Integrated lid & cover (1 piece)
Integrated heater up to 40°C
WaveFlow™ dual filtration
Integrated heater up to 40°C
WaveFlow™ dual filtration
Integrated heater up to 40°C
WaveFlow™ dual filtration
- Matte Black
- Charcoal Black
- Flint Grey
- Breton Stripe
- Burgundy
- Navy
- Charcoal Black
- Navy
Delivery
After you order, you're covered
Order by 6:30pm
We process it and get it out the door the same day.
One-hour window
DPD send you a one-hour delivery window on the day.
Free next day
Tracked next-day delivery on every spa. Saturday delivery is £9.99.
Set up and fill
No tools needed. Fill it, heat it, and you're in.
2 year warranty
Two years of cover on your spa, handled by our own UK team.
UK support team
Mon–Fri 8:30am–5:30pm, Sat 8am–4pm. We reply within 8 working hours.
FAQs
Didn't find your answer? You can also check out the Support Centre.
Or chat to us directly using the chat pop up in the bottom left corner.
What are the delivery costs and how long will it take to arrive?
What is included with my spa?
How long is the warranty on my spa?
What extras do I need?
Can I use my tub all year round?
Does it plug into a normal socket?
Plug it into a weatherproof outdoor socket with RCD protection, and never use an extension lead. Power supply: [TBC: confirm 13 A plug]. Cable length: [TBC].
What base do I need, and how heavy is it when full?
Set it on a flat, level, solid surface such as patio slabs, concrete or decking rated for the weight. Avoid soft lawn. Filled weight: [TBC] for each size, before anyone gets in.
Do I need planning permission?
A portable hot tub on a patio or lawn doesn't usually need planning permission. Raised decking over 30 cm, a listed building or a conservation area can change that, so check with your local council if any apply.
How noisy is it?
The bubble blower is the loudest part. Measured noise: [TBC] dB on low and [TBC] dB on high.
How much looking after does it need?
A few minutes a few times a week: test and balance the water, rinse the filter, and keep the lid on between soaks. Replace filters every [TBC] and change the water every [TBC].
