The Long Sleeve T-shirt is ideal for problems in the shoulders, shoulder blades and elbows, as well as for pain in the neck and spine. As the Back on Track fabric is dependent on skin contact in order to be most effective, the tops size is less important if one is affected by pain in the shoulder region as the material always has body contact in these areas. However, it is easy for an air pocket to appear between the top and the lumbar back region when standing up. So for those affected by backache then the Back Brace and Mattress Overlay are highly recommended as well. Chest circumference : 114cm: Bottom circumference: 106cm Arm Length: 51 cm Armhole circumference: 58 cm Shirt length: 74 cm https://botcanada.com/ Sizing charts can be found https://botcanada.com/sizing-charts/