Help

Ask us anything.

And if it isn't here, write to hello@bluum.com — a person replies, usually the same day.

About 30 seconds to the first level, under a minute to Peak. There's no waiting around for it.
Yes — that's how most people use it. It's 18 mm thin and sits flat under a jumper or a dress without showing.
Up to 8 hours on Low with a soft rhythm, around 3 hours on Peak. It charges over USB-C in about 90 minutes.
It's designed to be worn over a thin layer or directly on skin at the lower levels. It caps at 60 °C and cuts out automatically after 90 minutes.
Use it for two full cycles. If it isn't for you, write to us and we'll refund you in full and cover the return.
Across Europe and the UK, free, in 2–4 working days. Everything ships from Portugal in plastic-free packaging.
Wipe the silicone pad with a damp cloth. The strap unclips and can be hand-washed cold.
Absolutely. Turn it around and it sits over the lower back — that's the second most common way people wear it.

Still thinking about it?

Sixty nights, no risk, free return. That's as easy as we can make it.