Features: Universal Design Fits Left And Right. Fully Adjustable For Maximum Comfort. Indications: General Immobilisation Of Shoulder And Arm As Requested Following Trauma Or Surgery. Size Length Of Forearm - Small 40 - 46 Cm. Medium 46 - 51 Cm. Large 51 - 55 Cm. The Range Primarily Uses A Revolutionary New Material, Breath-O-Prene, Which Has Very Specific Characteristics And Is Unique To Red Box In The United Kingdom. No Adhesives Are Used In The Manufacturing Process, Offering An 'Open Construction' To Increase Breath-O-Prene'S Breath-Ability And Reduce The Potential For Skin Irritation. It Is A Softer, More Comfortable Yet Durable Material That Is Also Latex Free.