ThermaCare Lower Back HeatWrap Large/XL, 8 Hours of HeatSoothe your back and hips with ThermaCare Lower Back and Hip HeatWraps. ThermaCare HeatWraps keep on working even after you take them off for up to 16 hours of back pain relief. That's 8 hours of heat while you wear it, plus 8 hours of relief after you take if off.Delivers heat that penetrates deep, warming the muscle right where it hurts - to relax, soothe and unlock tight muscles for long-lasting pain relief.Specially designed to fit your back and hip area.Allows you to move freely while delivering therapeutic heat.Thin enough to wear discreetly under clothing.Flexible enough to be worn on the move, during chores or while relaxing. HSA/FSA EligibleRestrictions apply; contact your insurance provider about plan allowances and requirements. We do not currently accept FSA or HSA cards. Please use a credit card, debit card or gift card to pay for your eligible items and then submit the receipt to your plan based on the current policies for reimbursement.