Quick relief for pregnancy and postpartum pain. Easy to use for hot or cold therapy, these reusable gel packs fit perfectly in the front or back of our Soothing Fourth Trimester Underwear and in the back of our Soothing Maternity Belly & Back Support Band. Two gel packs for comfort and convenience Targeted relief for pregnancy aches and pains Soothing for postpartum/breastfeeding cramps Warm in the microwave for 20-30 seconds Cool in the freezer for 30 minutes WARNING: Overheating can cause burning and serious injury. Never place gel pack directly on skin as this can cause burning or freezing of the skin. Do not use if punctured. HSA/FSA eligible! Select Flex at checkout to use funds or get an itemized receipt for reimbursement!