Very firm roller.
Bought the 12 inch long, 6" diameter round.  Use it for lots of different exs.  Have not had this very long, so can't attest to durability.  But it is firm enough to stand on (wt. about 200 lb) for balance ex. and rolling along the plantar fascia (along the bottom length of the feet), with minimal compression of the foam.  (If you try standing on it, have something sturdy within reach to hold onto for safety, lol!)  A longer roll might work better for balance stuff, since most people position feet wider apart to practice balance exs.  But really like that this roller is very firm.
Rating: 5 stars