Purchased when I injured my arm. I opened it, but didn't use it, and my arm healed. Unused! Product Information: Product Size (Total Length 55cm, Width 27cm) Opening Size: Expandable from 3.5cm to 15cm Material: PVC/Plastic and Silicone Weight: 100g Origin: China TAKUMED brand cast covers are manufactured in factories that comply with the following certifications from around the world: Medical device quality management system ISO13485 & CE/German Industrial Standard DIN CERTCO/Medical Device Quality Management System CMDCAS-ISO/US FDA DRLM/Social Responsibility SA8000 certification Product Homepage: https://www.takumed.com/product-page/繰り返し使える-ギプスカバー-防水シャワーカバー-大人の腕用 (Reusable Cast Cover - Waterproof Shower Cover - For Adult Arms)