I greatly prefer this stiff but spongy support to the hard plastic orthotics I've tried in the past. I used them to get rid of a case of plantar fasciitis, and continue to use them (for several years now) because they help support my feet at the angle that works for me with a high arch, rather than the angle most shoes come in. Since the arch support is a dense foam, it gives in just the right way, where a hard plastic orthotic does not.I would prefer the full length ones, except that my feet arSee full review