FAQ

Yes. Lots of people wear Kalmi on period days for soothing warmth while they get on with things, at home, at work or out.

Fasten the strap around your lower abdomen or lower back, switch it on, and choose your heat level and massage mode with the buttons on the top edge. See How it works for the full guide.

Five heat settings, reaching up to 60°C at the top level, and five gentle massage modes. You can use heat and massage together.

It charges with the USB-C cable in the box. A full charge lasts up to around 8 hours depending on the settings you use.

The elastic strap adjusts to fit most body shapes and sizes.

Yes. It's slim and light enough to sit under most loose-fitting clothing.

The belt, a USB-C charging cable and a user guide.

It's one of the most thoughtful things you can give someone who reaches for a hot-water bottle every month. Add a gift note in your basket and we'll send it straight to them. See our gifting guide.

Orders usually dispatch within 1–2 working days. Free tracked UK delivery takes 4–7 working days, and you'll get a tracking link by email.

Every order is covered by our 100-day money-back guarantee. Contact us within 100 days of delivery and we'll arrange a return and refund. Full details are in our refund policy.

Please read the user guide before first use, start on a low setting, wear it over a thin layer of clothing and don't use it while sleeping. Kalmi is a comfort product, not a medical device. If you're pregnant, have a medical condition, reduced sensation or an implanted device such as a pacemaker, check with your GP first.

Kalmi is a UK brand. We ship across the UK with free tracked delivery, and a real person answers every message.