In ultra smooth, extra sturdy pyrex glass, the plugs from gläs's 3 Piece Anal Training Set run the size gamut from petite to extra filling. In other words, there's something for everyone and every butt!The Small, Medium and Large plugs are identically shaped, complete with comfy tapered tip, thick midpoint and plenty of weighty firmness. Like any good anal toy, the base of each plug is extra wide, providing a worry-free barrier against too-deep penetration.In ultra hygienic glass the gläs plugs are hypoallergenic and extra low maintenance. Pre and post play, rinse with warm soapy water or use a good quality toy care fluid/foam. Any favorite lube will be compatible. Store carefully to avoid scratching or chipping.* Measurements represent the largest Plug. The Small is 4" (10.16cm) insertable, 1.1" (2.8cm) at largest diameter, and the Medium is 4.5" (11.4cm) insertable and 1.4" (3.6cm) at largest diameter.