All of our stand up paddleboards are designed to work at 17-19 PSI for all user weights, this gives a good firm board. When not using the board and when it’s in direct sunlight we recommend lowering the pressure to 10 psi this stops the sun from heating the board and the pressure rising above 25psi which may cause it to rupture when you want to go back in the water just give it a few more pumps and all is good to go again. This is for all Standup paddleboards no matter who you purchase from.