Different Sizes: The waterproof bags with lanyard contain three sizes: Large: 15.9" x 10.6"; Medium: 12.4" x 7.1"; Small: 9" x 5.1". You can choose different sizes according to your needs Water-Resistant: Our dry bag has the overall waterproof capability with PVC material. The Matte and transparent surface allows you to use a cell phone without opening the bag Multiple Seals: Use seamless professional technology, not easy to tear. Sealing strips, Fold down protection, and magic tape gives your items multiple protections. It can prevent water, humidity, dust, sand, and snow from damaging your valuables Wide Range of Uses: HEETA file holder suitable for outdoor and indoor use. The waterproof bag can be used as a waterproof document holder, mobile phone bag, document bag, etc. It can also be used when you are walking, hiking, fishing, swimming, and camping Note: Please perform a waterproof test before using these bags. Put a piece of paper in the waterproof bag and put it in the water to check whether the paper gets wet after 30 minutes. WARNING: Risk of Cancer and Reproductive Harm from 2exposure to Di(2-ethylhexyl) phthlate [DEHP]. See www.P65 Warnings.ca.gov. Waterproof Dry Bag