All products and shipping costs in our store do not include tax. If you have any questions, please consult customer service before placing an order 1. How to properly inflate? 1. Before refilling, use a small tool to press down on the refill valve and completely release the remaining gas inside, so as to eliminate the pressure in the lighter's gas tank 2. Press the outlet of the gas-filled canister vertically downward for about 5 seconds each time, repeating two or three times. 3. After inflating, please wait for about 3-5 minutes before using it. If it still fails to ignite after 5 minutes, please turn the adjustment valve a bit higher.Note the + - directions. For more details, please see the detailed introduction below. Special reminder: In high-altitude areas above 1000m meters, inflatable windproof lighters and direct-flame lighters may be affected. The rate of decrease in ignition frequency is significant, please be careful when choosing a windproof straight-flame lighter. Try to use an open flame or a kerosene lighter.