Say goodbye to period cramps with the popmask Big Hug Self-heating Patches. Each single-use, biodegradable warming patch eases aches and pains associated with menstrual cramps so you can get on with your day. This heat patch for cramps provides convenient, subtle holistic period care that last up to 12 hours for extended relief. Simply stick the pain relieving patch onto your clothing or underwear in your chosen position and feel the gentle warmth all day or all night long. In a handy 5-pack, this heat patch for pain delivers heat when and where you need it in seconds, no microwaves or hot water bottles required. • 5 Self-heating patches to ease aches and pains associated with menstrual cramps • Lasts up to 12 hours • Single use • Attach to the inside clothing or underwear • Biodegradable • Dimensions: 5"L x 1.75"W x 6.75"H