Sagami use the same material like our cling wraps which we use to wrap foods in kitchen. It was the first 001 I tried and it was a failure. To me it didn't have the proper elasticity and won't attach to my skin well. Made me uncomfortable. A pack of 3 I used 2 and gave up on the 3rd.

So I almost gave up on 001 completely but thought might give other brand a chance before moving on. So brought a pack of 3 Okatomo 001. Felt great. Not just the heat, if I am using it with the right girl, we can almost feel the texture of the skin mutually and also if the virgina fluid increases etc.

Just my personal experience! YMMV.