My wife and I tried this out as it looked easier to change over the dildos. Our other harness requires my wife to take it on and off again to change dildos. With this one, she can keep it on while changing the dildos. While the dildos are hollow, the mid sized and large one are sturdy enough for good entry wether they're attached to the harness or whether I'm using them for solo play. The large one is quite thick yet smooth and really fills me up. The middle sized one is a great warm up to the larger one. The smallest one isn't that sturdy and my wife mentioned that it did a lot of bending and was hard to push in. I also noticed that during solo play. Over all, a great buy.