These are super sturdy workbench cookies to assist with woodworking. The base is petg and the pads are tpu. They have good weight to them and work well. If you want a little more non-slip id suggest not printing the pads and using some neoprene or silicone padding. The pads are simply applied with superglue There are 2 pad designs i used one of each on each cookie but you can do all one or the other also.