This supporter for sudden lower back problems. For those suffering from severe pain from herniated discs or sudden lower back pain, and for those who often carry heavy loads. The high-density rubber material support belt and three types of support stays firmly and powerfully fix the spine and lower back. Compression urethane maintains a high level of fit and heat retention. Furthermore, the support belt and support stays are detachable, allowing for a wide range of adjustment of the fixing force according to the location of the pain. Size: M Only tried on, and has been stored at home since then. Please purchase if you understand that this is a home-stored item. Please refrain from purchasing if you are sensitive to such things. #Phiten #Phiten #LowerBackSupporter #SupportBelt #BackPainBelt