The Derma Surgilast Tubular Elastic Bandage Retainer 25-1/2" Working Stretch Size 6, 25 yds, Contains Latex, for Large Head, Shoulder, Thigh is made from a high-quality nylon and rubber mix. It is Washable and reusable and is knitted in a continuous, seamless band and stretches well beyond its relaxed length and diameter, applying gentle pressure to keep bandages securely in place. Skin-contact surface is smooth and non-loopy, offering greater patient comfort.