Stampin' Up!'s rubber stamps are deeply etched in good quality rubber, giving you a great stamped image every time.
When you purchase a Stampin' Up! rubber stamp set you will see there is a big difference between them and a stamp you buy off the shelf - they come unmounted! For cling and clear-mount stamps you will get rubber images (with a cling property on the back) and labels for the back of the rubber images (again with a cling property). For wood-mount stamps you will get rubber images (with adhesive on the back), a wooden block for each stamp, and a clear label for the top of each stamp block. Purchasing your stamps unmounted reduces the cost plus it gives you the advantage of mounting them how you want to.
Note, wood-mount and clear-mount stamp sets will be discontinued on 3 June 2019, leaving Cling Stamps as the only red rubber stamp option.