Narthex made of light aluminum and coated air mesh with internal cotton coating and two straps for better fitting, support and comfort. Closes with hook and loop.References: Injuries of the chest, Vertebra injuries, Osteoporosis, Spondylarthritis, Lumbago, Arthritis, Post surgery use

S 85-95
M 95-105
L 105-115
XL 115-125