Zennest ck231 Foldable Adult Bathtub, 90-Gallon

Adult Bathtub: The Zennest ck231 is a foldable, freestanding soaking tub claimed to hold 90 gallons and support hot soaks or cold plunges. It is designed to pack away after use, but the listed dimensions conflict with the larger size guidance, so check the measurements and available floor space before buying.

At a glance

The listing describes a foldable tub for hot bathing or cold plunges, with tool-free setup and compact storage.
The listing claims insulation can help maintain hot or cold water temperature for up to 3 hours.
A claimed capacity of 90 gallons and full-body use for people up to 6'3" are presented, but the separate dimensions need clarification.

Price

£54.99Save 15%

Reference price: ~~£64.99~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

Foldable construction is intended to make storage easier than leaving a full-size bath set up.
The listing presents hot soaking and cold-plunge use in one tub.
Customer feedback reports straightforward setup and perceived insulation performance.

Technical specifications

7 specifications

Identity
Brand	Zennest
Model	ck231
Colour	Green

Dimensions and installation
Form factor	Round
Dimensions listed	20L x 50W x 20H millimetres
Installation	Freestanding
Capacity	90 gallons

What to know before buying

Listing details to confirm

Listing details are inconsistent: the dimensions field says 20L x 50W x 20H millimetres, while feature text gives 31.5"L x 31.5"W x 26"H and describes a 90-gallon tub. The material is also described as both 5-layer and 6-layer. Confirm the size and construction for the selected listing before purchase. The stated up-to-3-hour temperature retention and user-height guidance are listing claims, not independently established performance.

What’s in the box

Included

Who is it for?

A good fit for

Adults looking for a foldable tub for occasional hot soaks or cold plunges, with enough open floor space for the stated larger measurements.
Buyers who can confirm the tub's actual dimensions and want a setup described as tool-free.

Less suited to

Buyers who need a confirmed fit for a small shower or tight bathroom without first verifying the measurements.
Anyone who needs independently established insulation duration or a definitive layer count.

Zennest ck231 Foldable Adult Bathtub, 90-Gallon · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 160 ratings

5 stars65%65%
4 stars13%13%
3 stars9%9%
2 stars6%6%
1 star7%7%

Customer feedback reports that the tub feels sturdy, is easy to set up, and is considered spacious and comfortable, with insulation reported as useful for hot soaks and cold plunges. Those impressions may matter for regular bathing, but they do not resolve the listing's conflicting dimensions or layer count, and the stated temperature-retention duration remains a product claim.

Positive themes

Customers report easy setup and appreciate the space, comfort and perceived insulation.

Frequently asked questions

Can the Zennest ck231 be used for both hot and cold bathing?

The listing describes it for hot soaking and cold plunges. It claims temperature retention for up to 3 hours, but this performance is not independently verified.

Will it fit in a standard shower?

The listing cautions that it may not fit standard small showers or tight spaces. Its dimensions are contradictory, so confirm the actual measurements and compare them with your available space.

How many insulation layers does it have?

The listing refers to both 5-layer and 6-layer construction. The exact layer count is unresolved, so verify it for the selected listing.

What is the stated capacity?

The listed capacity is 90 gallons. The product dimensions elsewhere on the page conflict with the feature description, so treat the capacity and fit claims cautiously.