Posted by a reviewer on Amazon

The mat is a polyester pvc but there’s no antislip type texture on the reverse side

Posted by a reviewer on Amazon

The valve is plastic as opposed to the brass with several air release holes in the top

Posted by a reviewer on Amazon

One thing about this type of valve system is the fact that it won’t leak

Posted by a reviewer on Amazon

Works well good value low cost

Posted by a reviewer on Amazon

I sat these up for a couple of weeks to see if they would stay inflated

Posted by a reviewer on Amazon

The mattresses are wonderful but two issues keep me from granting this five stars 1 only one came with the repair kit both should have had the repair kit and 2 really had to work hard to get it small enough to fit back in the stuff sack this should be just a tad larger

Posted by a reviewer on Amazon

The inside of the mat is filled with a type of cellular foam that when it is rolled up the air in the foam gets compressed and is forced out of the valve

Posted by a reviewer on Amazon

The pad stayed compressed when that valve is closed