The material has only a very slight plastic odor. It is rather firm and does not feel very realistic. There are ribs in the entire length of the shaft.
This sleeve is rather thick and firm. The opening is shaped slightly like a vagina but insertion takes a little effort due to the tightness. The opening ripped slightly after only a few uses. It is not very long and I was popping out of the backside of the toy. This actually provides a nice sensation as the head pops in and out of the end. The tightness can be nice but definitely does not provide a sensation similar to a real vagina.
Maintenance is very easy; a quick rinse with some soapy water and you are all set. The TPE is somewhat porous and is only a concern if you share the toy.