The Neo G Angora & Wool Waist Warmer & Support is designed with naturally insulating material which helps to retain heat in the lumbar region to keep muscles and joints warm. It helps gently support the back/waist area to help with an injured, weak or arthritic back. Offering mild and comfortable support during sporting or occupational activities. The support helps keep affected area warm after injury and during recovery e.g. strains and sprains. SIZING GUIDE - To size, measure waist circumference (cm) - Small: 60 - 70 cm; Medium: 70 - 85 cm; Large: 85 - 100 cm; X-Large: 100 - 115 cm; XX-Large: 115 - 135 cm.