What is the inside structure material?
294391
I'm not really sure. Sorry I'm sorry, but I don't know the answer to that question.
1661819
I would think that the interior material is plastic. The top & sides are made of plastic and the bottom is the heating element and it's metal.
355483
It seems to be metal. I know the inside appears to be a nylon ball valve. I do know that after using this product for almost a year now it has worked flawlessly. I am actually going to purchase another for our second bathroom. It is a very we'll made product for the price
1510433
It is steel inside. I love this thermos, it keeps liquids really hot and the shape is convenient for slipping in to a decent sized briefcase.
734167
I have no idea what is inside. I bought it because it is made in one piece and doesn't separate from the handle. I wouldn't put this in the microwave...too pricey!Love it!
471163
The inside is more cotton material and it has 1 or 2 elastic bands that holds it together.
376538
Memory foam on the inside and a really tough Velour material on the outside. We bought two for the front seats and they wear well and have lasted longer than anticipated.
1146750
The inside it's made of industrial plastic. It's made really well. The handles are great and the bag is really pretty to look at
1435653
The interior is the same plastic as the outside. The coil at the bottom is metal.
1072264
Walls are not that think, but made of high quality plastic, approximately about 1-2 millimeters thick, so all of it on the inside is hollow.
288826
The inside is stainless steel, I have been using mine for over two years daily, through out the day. I am very satisfied with this product.
499444
Inside I believe. Its a fabric case though so the difference between inside and outside dimension is marginal. Especially since fabric can stretch a little bit
2117902
The surface of the inside looks like synthetic resin. Very similar material to the inside containers. I am using it almost every day and it is easy to use to me. Hope this helps.
1540883
Seems like some kind of vinyl exterior with a soft material on the inside. Flexible for easy handling (Easy on and off), durable...no cracking of any kind; have had mine two yrs. I would buy again.
748398
Not sure what the inside is made of but it feels like small beads and must not get wet.
143152
Honestly, I do not know. The inside is metal and the only plastic is the screw on lid.
1186481
The interior you see inside is metal. But based on weight, i think the insulating material is probably glass.