First Glass Trei Butt Plug

A Slow, Full Fill Without Harsh Edges

Some evenings call for a slow build rather than anything sudden. This glass plug is made for that kind of unhurried play, where the goal is a steady, filling sensation that comes on gradually. Its body narrows toward a smooth, rounded tip, so the start of each session stays easy and controlled.

Glass changes how a plug feels in the hand. The surface is polished and cool at first touch, and it stays free of the tacky give you find in many softer materials. Because the body is solid and rigid, the shape holds its line exactly as you position it.

Three Sizes, Graduated Girth

The range runs through small, medium, and large. The small is the most manageable of the three, with an easy insertion and a gentle fill. The medium offers a balanced girth that gives a more substantial feeling while staying comfortable for regular wear. The large is the longest option, reaching for a deeper, more filling sensation.

Every size keeps the same tapered silhouette and rounded tip, so moving up the range changes the amount of fill rather than the overall shape. A flared base sits at the end of each plug, giving you a secure grip for insertion and removal.

Borosilicate Glass That Responds to Temperature

The plug is cast from borosilicate glass, a dense, non-porous material that is also phthalate-free. Glass conducts temperature well, so dipping the plug in warm water gives a gentle warmth, while chilling it produces a cool sensation. Both effects last for as long as the plug stays in your hands and keeps the temperature you set.

Water-based, silicone-based, and oil-based lubricants all glide smoothly over the surface. Because glass does not absorb fluids, the plug is easy to wipe and rinse. Soap and water or a toy cleaner will handle cleanup, and you can use either once the plug is finished.

When you want a change in sensation, heat or chill the plug in water and let the glass do the rest.