As I can see, both are double layered onaholes, and with strong type of double layer. I had bad experiences with double layered onaholes, they were way too hard and thin that my dick hurt, I couldn't keep my erection inside. Some people like them, but I don't recommend them at all, maybe you'll like them, but for the first onahole I recommend something more "light", try looking for something more soft. Recommendations would be:
Smooth & Flat Girl's Laboratory
Secret Twin Tales (Sana Sasakura)
Girl in the Box
R20 (only if you have a big penis)
Girl's (i)
My Big Brother is a Pervert

Those are onaholes that I own, are soft, and I like. Hope it helps, be sure to get lube too, is really important, get 2 bottles if you can if you won't buy too often. Pepee Wankers 360 is a great one, Peace's is horrible.