Product Highlights
Weatherproof protection
The Lush Caspian
Drop Stitch Rigidity. External Heater. Full Interior. The Wave Lush Caspian uses high-pressure drop stitch construction for walls firm enough to sit on, with the heater mounted outside the tub so the whole interior is yours. Built-in seating, finished in woven Grey Herringbone.
TBC figures fill in automatically once added to the product (specs) or its variants (specs).
Spread the cost from £49.99 a month, interest-free
Pay in 3 interest-free payments of £199.99
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- 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.
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Product Highlights
Weatherproof protection
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible.
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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.
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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
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Set up
20 min
No tools needed.
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Fill4 Person TBC6 Person TBC
With a garden hose at normal mains pressure.
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Heat to 38 °C4 Person TBC6 Person TBC
From 10 °C tap water with the lid on.
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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).
Tool-Free Setup
Experience a completely hassle free installation as you go from unboxed to fully setup in under 20 minutes with this simple, tool-free guide designed to get you relaxing in your hot tub as quickly as possible.
Where the massage comes from
Layout is illustrative. Seat and jet positions need checking against the supplier drawings in the spec pack.
Which size is right for you?
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4 Person
Couples and small families
- Seats
- 4
- Footprint
- 169 cm
- Water
- TBC
- From
- £599.99
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6 Person
Families and entertaining friends
- Seats
- 6
- Footprint
- 200 cm
- Water
- TBC
- From
- £699.99
Drawings show each size to scale against the largest.
Product details
Key Features
Dimensions
Technical Specs
What's in the box
Square Body
Integrated Heater
Easy Use Controller
Square Energy Saving Cover
Guides & downloads
Full setup, water care and troubleshooting Coming soon
Get from box to bubbles in minutes Coming soon
Dimensions, electrics and materials on one page Coming soon
Upload PDFs to the product's specs metafields (Owner's manual, Quick-start guide, Spec sheet).
Watch the full setup, start to finish.
What it costs to run
Your cost will depend on your tariff, how often you use the spa, the weather and whether the lid stays on between soaks.
Example kWh figures for layout only, not measured. Add measured values to each size's variant metafields (Energy use summer / winter).
Water care made simple
- A few times a week Test and balance the waterDip a test strip and top up chemicals if needed
- Weekly Rinse the filterA quick spray with the garden hose
- Every TBC Replace the filter
- Every TBC Drain and refillFresh water keeps chemical use down
- Every soak Put the lid back onKeeps heat in and leaves and debris out
Chemie-Starter-Kit und aufschraubbare/anschraubbare Filter
Everything you need for clear, balanced water from your first fill.
Read our water care guidesFilter and water change intervals need confirming against Wave's care guidance.
Is your garden ready?
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1 · Space
Room to walk round it
4 Person: 169 cm × 169 cm
6 Person: 200 cm × 200 cm
Leave enough room to walk around the spa and reach the controls and cover.
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2 · Surface
Flat, level and strong enough
4 Person: TBC kg full
6 Person: TBC kg full
Patio slabs, concrete or decking rated for the weight. Avoid soft lawn.
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3 · Power
A safe outdoor socket
Supply: TBC
Cable: TBC
Use a weatherproof outdoor socket with RCD protection. Never use an extension lead.
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4 · Access
Getting the box in
4 Person: TBC · TBC kg
6 Person: TBC · TBC kg
Check your side gate or doorway before delivery day.
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.
TBC figures come from variant metafields (Filled weight, Box dimensions, Box weight) and product metafields (Power supply, Cable length).
See it in your garden
Use your phone to place a life-size spa in your garden before you buy.
- Open this page on your phone and tap the button.
- Point your camera at the spot you have in mind.
- Walk around it to check the fit.
Needs a 3D model (GLB) added to the product media. Until then the button stays disabled.
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
Warranty & support
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2 years
Pump & heater
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12 months
Liner
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TBC
Cover & lid
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TBC
Controller & WiFi
Help when you need it
Our UK customer service team can help with setup, water care and anything else about your spa.
The UK's highest-rated hot tub brand on Trustpilot
Add a "Register your spa" link in the section settings.
Pump, heater and liner terms come from the current FAQ. Confirm all FY27 terms before launch.
What happens after you order
This spa is on pre-order. Payment is taken when you order, and your expected delivery date is shown when you pick your options above.
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Today
Order by 6:30pm
We process it and get it out the door the same day.
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When it ships
One-hour window
DPD sends you a one-hour delivery window.
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Next day
Free delivery
Tracked next-day delivery. Saturday delivery is £9.99.
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First soak
Set up and fill
No tools needed. Then fill, heat and relax.
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].
