I like the fact that it is rubberized with ridges.  My dog does not slip at all. I also love the width of the ramp.  It it approx 18 inches wide.  Frankly, i cannot imagine trying to use a more narrow ramp.  I am having  to train my dog on this ramp and she is terrified but with me holding her collar, she goes up and down it with no problem - just nerves.  It is only a matter of time before she does it by herself..  If the ramp was narrower, it would have been impossible to use.  The wider width helps prevent her from seeing down to the ground and being tempted to jump off and risk injury.  Although i plan to use this for the car,  I have been experimenting using this for my 35 inch high bed and find it to be very very stable to use as a ramp for beds.  My only comment is that for this very high bed,  the ramp is a little steep and i definitely have to supervise my dog who is preferring to jump off that bed rather than use the ramp.  A longer ramp might be better for this height but it is still doable as long as i hold her collar.