Direct Thermal Wristbands – Strong, tear-resistant, waterproof and Secure Our Stock Thermal Wristbands are made of a tear-resistant direct thermal synthetic material that is not only durable, but also waterproof. This provides your organization with a point of sale printing option using a direct thermal printer. The bands are attached around your patron’s wrist using a super-strong adhesive closure; in addition there is a unique die cut pattern that helps make these wristbands more secure by showing if they were tampered with.