Dave, we are using a 200D nylon material from a fabric manufacturer that specializes in this type of application. By comparison, Curtis rafts were made of a 70D nylon material. If you are looking for a Curtis raft alternative we think that our boat is a great option.
Additionally, all seams are RF welded for strength. RF welding creates a seam that can be as strong as the original fabric.
Our goals were to ensure that the boat was reasonably priced, while still remaining strong and durable...we think that we have succeeded.
If you have any additional questions, please let us know. firstname.lastname@example.org