Not non/slip per se. The s were too far apart to support our foam mattress and I had to put a layer between the s and the mattress which causes the mattress to slip. I used the cardboard from the box the mattress came in which is rather slick. I just need to add a small sheet of rubber over the support layer.
The picture looked as though the s were sufficiently close enough to support a foam mattress without box springs. No they are 6 inches apart and are mounted edge on further reducing surface support area. A 1/4 inch sheet of strand board would support and not slip.
Buy me with a caveat
Not non/slip per se. The s were too far apart to support our foam mattress and I had to put a layer between the s and the mattress which causes the mattress to slip. I used the cardboard from the box the mattress came in which is rather slick. I just need to add a small sheet of rubber over the support layer. The picture looked as though the s were sufficiently close enough to support a foam mattress without box springs. No they are 6 inches apart and are mounted edge on further reducing surface support area. A 1/4 inch sheet of strand board would support and not slip.