30 Advantage card points. Popmask Big Hug Self Heating PMS Pain Relief Patches 5s FREE Delivery on orders over 45 GBP. These self-heating patches ease aches and pains associated with menstrual cramps. Soothe your body and get on with your day. Simply stick the patch onto clothing or underwear in your chosen position and feel the gentle warmth all day or all night long. Give yourself a big hug when you really need it! Brand: Popmask Each pack contains 5 self-heating patches Self-heating (lasts up to 12 hours) Attach to the inside clothing or underwear Single-Use Biodegradable Cruelty free