For whatever the reason is – my tub is a little slippery, and not something I relish getting in and out of (especially with my ankles). To reduce the chance of slipping, and possibly breaking something, I would want the Enkosi bath mat. It is 40″ × 16″. This should be sufficient for my needs. And while color technically doesn’t matter, I would like the black one. You can find the bath mat at Amazon for $20.