Strong Shock Absorbing Material - Prevents little fingers from getting pinched and seriously injured in slammed doors. Will not compress like cheaper products made of inferior materials.; Firm Non-slip Grip on Door ? Finger guards made from foam type materials have a tendency to fall off doors over time. Qdos uses a unique material with non-slip properties and good ?memory? to stay in place. Fits almost all doors.; BiteProof & Choke Safe ? Soft is not always safe! If a child gets hold of a Qdos Finger Slam Guard, no worries about biting off a piece. Made with non-toxic, firm food grade material.; Adhesive Post for Temporary Storage - Keeps it out of children's hands and right where you need it, when you need it.; The Finger Slam Guard fits all doors from 1.25" to 1.75" thick (30 - 45 mm).;.