Glue On Shells are ideal for times when you need to do multi day rides/sporting events or just don't want to use gaiters with your boots. They come in the same sizing range as the Glove boot. 

Glue on Shells are not meant to replace horse shoes and should only be left on for the period of the event (a few days).  The manufacturer says they should not be left on for extended periods. If you need a long term "glue on" form of hoof protection then see the new EasyShoe which can also be applied with nails but does not enclose the entire hoof capsule. Easyshoes are ideal for those disciplines that as yet do not permit hoof boots.