The first two days of a cycle arrive with a deep, dragging tension across the lower abdomen and back — and the usual answer is a hot water bottle or a corded pad that keeps you on the sofa and out of your own day. A moulded panel holds a set temperature across four levels, from a soft background warmth to a deeper setting, while a low vibration mode works underneath it. A rechargeable cell runs it without a cable, and a wide elastic strap keeps the panel flat against the abdomen or the lower back so the warmth stays where you put it. Warmth that moves with you — worn under a jumper at your desk, on the train, or in bed, without a cord deciding where you sit.