The Posture Corrective Brace is a great for those with osteoporosis or other back ailments who are looking for an easy and painless way to aid their condition.Features#1 Dr. Recommended.Comfortable material: 55% foam, 25% polyamide, 20% cotton.One size fits most: Fits chest sizes 22 to 46. (Men measure the chest; women measure just below the bust).Wash by hand with warm water and mild detergent.