The BrowneBilt TaperLink Cup Holders are designed to take the abuse. Printed from TPU, a semi Flexible material, it is very impact resistant so accidently dropping these won't be an issue. Inset bottom screws for a non scratch surface to act as a koozie perfectly. TPU is a non-scratching material so there shouldnt be concern on scratching your cups! The TaperLink Mounts are designed to seat the more you push the Male Stud into the mount, giving you the option of having it swivel freely, or with effort. This includes: (1) Cup Holder (1) Flat Surface Mount