High-density” means this is basically solid styrofoam.

Aweful... cheap styrofoam shaped into a roller.

This product is rock hard styrofoam - no give at all

The foam was a hard styrofoam not firm rubber foam as I anticipated from my physical therapy

it's just hard styrofoam.

It is solid, hard styrofoam

It is solid, hard styrofoam

It's made from a stiff Styrofoam material but so far no bits or pieces have shed or come off after repeated use

The material it’s made of is a rigid styrofoam

If you are wondering ho high density this is, imagine slightly harder/denser packing styrofoam.

This is only painted very hard styrofoam

This roller is like thick, hard styrofoam

This is a simple, cheap styrofoam roll

it's just a very cheaply made from weak styrofoam painted in blue with a raised seam like the others have posted

n’t fit in a regular bag (not like I would travel with the thing).

Several years of use and still as good as when I bought it.

so good!I hurts a

Works as it should.

A large Styrofoam roller that is easy to use, as well as, store in a closet or bed.