These Tuck-Once® Grips help to lock your slipcover in place! They keep slipcovers secure and stabilized, with no more tucking. They invisibly hold fabric in place all around the cushions. Made from sturdy crystal-clear flexible elastomer. Easy to install, they can be used repeatedly. Simply insert grips in the crevices between the furniture arms and the cushions (18" grip for arms, 24" for seat cushions). All packs include 2 18" grip for arms. Chair pack includes one 24". Loveseat pack includes two 24". Sofa pack includes three 24".