Zennest 150-Gallon Oval Inflatable Cold Plunge Tub

The Zennest Cold Plunge Tub 150 Gal Oval sits at #10 in this guide at £109.99, and it is the cheaper half of a pair: the same brand's 140-gallon tub is listed in the same set at £399.00, so the tub with the bigger capacity costs £289.01 less than the one with the smaller capacity. Both are inflatable, both are oval, and the numbers on the two listings are the reason this section exists.

Zennest's own listing is where the checking starts. The Item Dimensions field reads 15.2L x 61W x 50.8H centimetres, which is about 47 litres of space, while the Capacity field on the same listing reads 150 gallons, roughly 568 litres. Those two figures cannot both describe the same tub. The rating has the same problem in miniature: 4.2 out of 5 is shown as coming from 31 ratings, but the star breakdown underneath adds to 100 votes. One number does hold up in use — a buyer writes that it was "huge, so much larger than I expected", which fits a 150-gallon tub rather than a 47-litre one, so the dimension field is the likelier mistake of the two. Everything on this page comes from the Amazon listing for this tub; nothing here was measured or tested by us.