We shall try to be as accurate as possible without being crude, but due to the nature of the product we will need to be somewhat descriptive, so we apologies in advance.
Insert the bulbous "pony" end vaginally (or rectally), spread the labia, and nestle the little ridges on the "saddle" against your mons. The dildo end "horse" is more obvious and needs no explanation.
Women are naturally retentive, so yes the feeldoe will stay in, but until your muscle groups get used to it, use your thighs for extra support.
As your feeldoe is made from durable clinical grade silicone, it can be washed with soap and water or boiled. Feeldoe is flexible, warms to body heat and hypoallergenic. It is also non sticky when used.

The purple Standard Feeldoe is 3.75" x 1.5" and 7" x 1.35"
The blue Slim Feeldoe is 3.75" x 1.5" and 5.5" x 1.25"
The blue Slim Feeldoe Powered is 3.75" x 1.5" and 6.25" x 1.25"
The black Stout Feeldoe Powered is 3.75" x 1.5" and 5.75" x 1.75"
The red Feeldoe More Powered is 3.75" x 1.5" and 5.75" x 1.75"

As the feeldoe is silicone, it is best to avoid lubricants that contain petroleum or silicone. There are many water based lubricants and these are compatible.
As with all silicone products, the feeldoe material WONT react to other substances- it's completely stable and inert. We recommend you store your Feeldoe in a lint free cloth so it's ready to use when the mood strikes.