Annex Tiny’s oval shape has been streamlined and the tub’s bathing ergonomics have been improved. Caring for this graceful little hot tub is effortless, and it features an inner liner and two shaped seats, making it ideal for one or two people. Light in weight and compact in size, the tub is easy to install in a small garden or on a patio, and thanks to its small volume, it heats up quickly, allowing you to enjoy a spot of luxury even on a busy weekday evening. Safe, factory-installed LED lighting is available as an accessory for the the tub, which brings out the its own color and creates a magical atmosphere for spa sessions later in the season when the nights begin to draw in.The new hot tub model was introduced in early March 2022.

The air source heat pump is a sleek unit consisting of a cooling and heating function, a circulation pump, a filter and a control panel. The total power of the device is about 5 kW. The filter runs whenever the device is on. The typical heating or cooling rate is about 2 °C/hour for M-sized tubs, while for small tubs it is 4–5 °C/hour. The net power transferred to water by the heat pump is at best 5 kW.

The outer shell is made out of sleek panels made of heat-treated softwood. The heat treatment improves the wood's resistance to rot and reduces the shrinking and swelling of the wood, when moist. The stylish deep black, surface-treated thermo wood is durable and the paint protects the wood from dirt and UV radiation. This easy-care and recyclable panel material is also used in the Kirami FinVision® Nordic misty modules. The hot tub and sauna look great together thanks to their matching external cladding. Light gray is velvety smooth and delicate dotted inside colour. The soft, vibrant grey of the interior is always timeless and elegant, and it blends in beautifully with the environment.

The barrel diameter is 170 cm and water volume 615 litres. It is suitable for 1-2 people. The dry weight of the hot tub is 92 kg. The gross heat output of the Dual stove is 5 kW and the net heat output transferred to the water is 5 kW.