? ? ? We used to sell a seat bag made of polyester, and we had a 68-years-old user who had retired and often rode in the wild with his wife. The weather was pretty good at the beginning, but it suddenly started to rain heavily when they passed by a forest . Although they eventually found the shelter, the seat bag was still wet and the phone inside was ruined. All of the nice pictures ?about the journey can not got back on the phone. We feel very sorry after reading the grandfather’s experience, so I decided to make a fully waterproof seat bag . ? Specification Capacity 6-12 liters Weight: 0.457kg / 1.0lb Size: 23.23*6.3*5.12 inch ? Package 1* Full waterproof bike saddle bag ? ? High quality polyester & TPU,?? full on waterproof? ? ? Outside polyester + inside full waterproof TPU ,? keep your clothes?and electronic device dry all the time. ? ? Triangle strap system and a bottom support plate provide strong support ? ? Max 12 L capcity,? best fit for long term travel ? ? ? ? Inside is TPU, one of the best waterproof material ? Waterproof zipper in the bag mouth, more space for storage , better than rolling contraction ? There is reflective pattern on each side of the pack The tail light can hook on the rear part easily Cyclic elastic rope on upside of pack for adding storage options 3 hook & loop seat post attachment strap provides a stable and defined shape ? Size chart ? ? ? Shipping and PackagingAll items will be double checked and well packed before sending.Items will be dispatched within 1 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer). Special Announcement:Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resolve the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .ReturnIf the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us FIVE-star Positive Feedback for the transaction.