Flents Hot/Cold Mask - Headache Relief Mask - This headache / pressure relief mask is a great drug free relief alternative. Get drug-free relief from headaches and sinus congestion pain. Gel allows mask to conform to each users unique eye area. One size fits all. The main features of the Hot/Cold Mask include: Hot/Cold Gel -Hot/Cold gel offers relief from headache and sinus pressure symptoms, Flexible Design - Gel mask forms around your faces structure, Adjustable Strap - Mask has an adjustable strap for a snug fit, one size fits all. AboutFlents: Flents has developed a line of innovative personal care products. Popular products include Insty Splint finger splints, sleep masks, hot/cold water bottles, ice bags and eye patches. Flents products offer simple solutions for at-home health and wellness needs.