You can look at them on this site but Walgreens and CVS has the same thing cheaper. When I got mine there was a brochure included that told you how to order an extra step. I ordered the step because my bed is high. Both of my dogs use the steps going up but only one uses them going down. It took them a little while to get used to them but if I remember correctly there are instructions about placing treats on the steps to get them to use them
Doggy Steps from Telebrands Corp. Official Page