Thank you for viewing. Those who comment asking for a price reduction will be blocked. Also, please read the profile before asking questions or making a purchase. BLACK/SLATEGREY 500ml with Active Handheld Flask Salomon SALOMON SOFT VALVE COVER LC2019900 Clear/ALLOY Outdoor Soft Bottle Accessory I forgot to include the handheld flask in the overall photo, so I've added it. The diameter of the filling port is approximately 38mm. Please check the photos for the condition. If you are considering a purchase and have any concerns, please let me know, and I will provide detailed information such as size and additional product photos. Comments will be deleted and users blocked if there is no response within 2 days. Also, please be sure to read the profile before asking questions or making a purchase. Basically, messages after purchase are unnecessary. Silent purchase, receipt, and evaluation are all welcome. Immediate purchase is available. Anonymous shipping will be used.