Don't bother with anything else!
I've tried the kind of bath pillow from the DG with a cheap foam core and a flimsy waterproof cover that pops after a month or so and allows the thing to absorb water, and then I tried the kind that's supposed to absorb water but also somehow be antimicrobial with a mesh fabric on the outside. Both suck! This is a solid, smooth, single piece of rubber or silicone against your skin. Highly comfortable. Actually, it's 3 pieces that come apart for cleaning.
Rating: 5 stars