The AllMatters period panties are: Comfortable: The outer material, TENCEL™ Lyocell, promotes breathability and comfort. It regulates moisture absorption and release. Durable: High-quality materials allow you to use and wash it repeatedly – ​​without losing functionality. Eco-friendly: The absorbent core and outer material are made from sustainable wood-based fibers, sourced from certified and controlled sources. AllMatters Satisfaction Guarantee or your money back (60 days). Composition Outer material: 94% TENCEL™ Lyocell + 6% elastane Waterproof layer: 100% polyester Absorbent core: 100% VEOCEL™ Viscose Inner layer: 77% polyester + 23% merino wool Stitching: 82% polyamide + 18% elastane Instructions for use How do I use it? Step 1 Use period panties instead of a pad, tampon, or menstrual cup – or as extra protection (depending on your menstrual flow). Step 2 After use, rinse in cold water until the water runs clear. Machine wash in cold water (30°C) or hand wash with neutral detergent. Hang to dry. Step 3 Reuse and repeat. Period panties can be used day and night.