SOLES SOLES46 Clavicle Bandage Adjustable, Flexible, Breathable Fabric - Unisex - Improves Poor Posture & Osteoporosis, Clavicle Brace for Collarbone Injuries (Small - Medium)

Not particularly brilliant. Although the padding st the back does make it more comfortable when you lie down, the tightened straps cut into my arms like cheese wire. There doesn't appear to be any way of broadening the straps to prevent this.