(Latest upgrade2023-10）100% waterproof fanny pack, specially made waterproof zipper（2023 New Zipper）, waterproof fabric and waterproof production technology keep your items perfectly dry in water sports kind. (SPECIAL NOTE: If you are under water for more than 20 minutes, it is recommended to add a regular plastic bag to protect electronics or valuables just in case.) Front reflective strip design for safety and protection. Applicable occasions: suitable for all kinds of water activities: rafting, boating, sailing, swimming, surfing, kayaking and paddle boarding. Protect your belongings from water, rain and snow, the belt is up to 53.14 inch. FIRST TIME USE: Please make sure the zipper is completely closed and you can press the bag down with both hands. If there is no air leakage at this time, it means it is completely sealed. If there is air leakage, please check if the zipper is not completely sealed and then try to seal it again. We recommend that you perform a waterproof test before going into the water; if there are any quality issues, you can always replace it. About waterproof zipper: compared with other ordinary zippers, waterproof zipper has special waterproof function, it is normal to have a tighter feeling when you use it.Also, please rinse it with fresh water after using it in sea water. If there is sand, mud, etc. attached to the zipper, please clean it first before closing or opening the zipper, please lubricate the top of the zipper with lubricant regularly, and when not in use, please close the zipper completely and then store it. Double-layer TPU waterproof material, waterproof, wear-resistant and durable. STRONGLY RECOMMENDED: For first-time users, we recommend that you read the instructions on the following detailed page. (Latest upgrade2023-10）100% waterproof fanny pack, specially made waterproof zipper（2023 New Zipper）, waterproof fabric and waterproof production technology keep your items perfectly dry in water sports kind. (SPECIAL NOTE: If you are under water for more than 20 minutes, it is recommended to add a regular plastic bag to protect electronics or valuables just in case.) Front reflective strip design for safety and protection. Applicable occasions: suitable for all kinds of water activities: rafting, boating, sailing, swimming, surfing, kayaking and paddle boarding. Protect your belongings from water, rain and snow, the belt is up to 53.14 inch.