Match the base to the surface
Check the mounting surface and whether the base can be removed.
Look for an even surface
Check the manufacturer’s guidance for the exact model. Several listings specify smooth, clean, nonporous surfaces. Textured tile and grout can make it harder to form a seal.
Compare the base construction
An integrated cup is part of the body. The Pleasure Crystals Glass and Icicles No. 88 use a separate silicone base. Check the care and compatibility instructions for each part.