The Kaldewei Saniform Plus bathtub series occupies the mid-price segment in the portfolio of the German brand and is one of the most popular and recognizable lines in this category. These are classic single-person bathtubs with an anatomical shape and a drain at the foot end — a format that is hard to imagine a modern bathroom without. The series is aimed at a wide audience looking for a reliable, durable bathtub of traditional shape made from premium-grade material at an affordable price in its segment.

The fundamental feature of all Kaldewei products is the material. Kaldewei steel enamel combines strong steel and thin glass, ensuring the bathtub does not bend underfoot, retains its shape over time, and does not fade or yellow. The enameled surface maintains its shine and hygiene for decades with proper care. Overall, the bathtub is designed for a long service life, as evidenced by the manufacturer's 30-year warranty.

Saniform Plus bathtubs feature an especially wide back area and an ergonomically shaped inner basin, providing comfortable body positioning. The narrowed inner shape reduces actual water consumption when filling compared to bathtubs with rectangular inner cavities. The series is available in several sizes (140x70, 150x70, 160x70, 160x75, 170x70, and 180x80 cm), allowing for a selection suited to most standard bathroom sizes.

The Star version is additionally equipped with built-in side handles made of chrome-plated steel. These are integrated directly into the rim of the bathtub without disrupting its lines, providing reliable support when entering, exiting, and changing body positions. This makes Star especially relevant for elderly users, individuals with limited mobility, or any situation where safety in the bathroom is a priority.