Ankle foot orthosis (AFO) and method of making the same

An ankle foot orthosis, comprising:

• a brace body comprising closed cell foam inner lining bonded to an outer layer consisting essentially of a polyolefin elastomeric material selected from the group consisting of an ethylene/butene copolymer and an ethylene/octene copolymer, wherein the outer layer substantially covers the inner lining, the brace body further comprising:
• a back portion;
• a medial side portion having a medial front edge;
• a lateral side portion having a lateral front edge;
• a sole portion;
• and
• a proximal edge;
• the medial front edge and the lateral front edge being configured for an overlapping arrangement;
• and
• a closure mechanism to tighten the ankle foot orthosis on a foot,
• wherein the ethylene/butene copolymer or ethylene/octene copolymer of the outer layer has a melt index at 190° C. of less than 0.5 to 30 g/10 min, a density of 0.857 to 0.910 g/cc, a melting range of 36° C. to 104° C., a Shore A Hardness of 56 to 96, and a flexural modulus from 3 to 110 MPa.