The Stryker PRO 420 inflatable boat comes with the added protection of 1.8mm wrapped with our Stryker Shield® under the entire bottom of the boat. There is no other comparable boat on the market today. We add a 20” transom for the ability to add a JET outboard for extreme shallow water use. Please note: this model requires a 20” prop motor. This is the perfect inflatable boat for a large group of adventure seekers paired with a 20HP long shaft(prop) outboard or a 35HP JET.