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Ice Baths
Kaldera Plunge 550 XL
550L two-person tub built for shared sessions
Every health claim on this site links to the peer-reviewed study behind it
One-time purchase
£149.00
or 4 interest-free payments of £37.25 with Klarna
In stock
- Free UK & EU delivery over £100, typically 5–10 working days
- Full refund on unused items returned within 30 days of delivery
- 30-day returns
- Ships from UK & EU warehouses - no customs charges
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- Mastercard
- Apple Pay
- Google Pay
- Klarna
- 30-day returns
- Free UK & EU delivery over £100
- Full refund on unused items
550L
Wide enough for two people to plunge side by side
- Room for one person to fully stretch out
- Heavier-gauge steel frame with cross-bracing resists flexing when full
- Double-stitched, welded-seam shell like the rest of the range
- Insulated lid included
Why it works
About this product
The 550 XL is wide enough for two people to plunge side by side, or for one person to fully stretch out. It's become the standard choice for clinics, gyms, and coaches running group recovery sessions.
Construction steps up accordingly: a heavier-gauge steel frame with cross-bracing at the base resists flexing when full, and the tarpaulin shell carries the same double-stitched, welded-seam build as the rest of the range.
At this volume, we recommend running it with a Chill Core 500 or Pro rather than ice alone - the larger thermal mass takes longer to cool and holds temperature more steadily once it gets there.
Specifications
- Capacity (L)
- 550
- Layers
- 3
- Lid
- insulated, included
- Drain
- bottom drain valve
- Material
- reinforced PVC-coated tarpaulin, cross-braced steel frame
What to expect
Your first weeks, mapped out
- Order
We dispatch from our UK and EU warehouses and email you a tracking number as soon as your order leaves the warehouse.
- Delivery
Typical transit is 5–10 working days, free tracked delivery on this order - no customs charges within the UK or EU.
- Setup
Assemble the cross-braced frame, fill, and pair with a Chill Core 500 or Pro - a 550L fill reaches 5°C from warm in roughly 3–4 hours on the 500.
- First sessions
The research clusters around 11–15°C for roughly 11–15 minutes. Never plunge alone - which this tub makes easy.
Common questions
Everything you need to know
Does it genuinely fit two people?
Yes, the 550 XL is wide enough for two people to plunge side by side, or for one person to fully stretch out. It's become the standard choice for clinics, gyms and coaches running group recovery sessions.
How long does delivery take?
Typical transit is 5–10 working days from our UK and EU warehouses, with free tracked delivery on this order (free on all orders over £100) and a tracking number emailed at dispatch.
Can I cool it with ice alone?
At this volume we recommend running it with a Chill Core 500 or Pro rather than ice alone - the larger thermal mass takes longer to cool and holds temperature more steadily once it gets there.
Which chiller should I pair it with?
The Chill Core 500 is rated for tubs up to 600L and pulls a 550L tub to 5°C from a warm fill in roughly 3–4 hours. For clinics or studios running plunges most of the day, the continuous-duty Chill Core Pro is the unit we recommend.
Will the frame cope with daily commercial use?
Construction steps up for this tub: a heavier-gauge steel frame with cross-bracing at the base resists flexing when full, and the shell carries the same double-stitched, welded-seam build as the rest of the range.
Does it come with a lid?
Yes, an insulated lid is included, and the tub drains via a bottom drain valve.
What's the returns position on a tub this size?
Same as everything we sell: return it within 30 days of delivery for a full refund, provided it's unused and in the condition you received it. Return shipping is paid by the customer unless the item arrived faulty or damaged.
30-day returns
Full refund on unused items returned within 30 days of delivery
Read the full returns policy
