The foam performs two functions: anti-slip, to increase the safety of using the ladder in the multi bed from the collection Nest by VOX, as well as the function of protecting the rungs from dirt.Thanks to its shape, the foams have excellent anti-slip properties.The set includes 5 foams - for each rung of the ladder.To attach them to the ladder you do not need tools - the foams are already glued on one side and you just need to stick them on the rungs.