Available in onyx black or crystal clear, these 3.5'' hand-blow, premium Borosilicate glass plugs are tapered to a gently curved elongated tip for easy insertion. The thin, flat base fits pleasantly against your body's contours allowing for more adventurous play. All Crystal Collection products warm to body temperature after a few minutes of use resulting in the most comfortable experience available. They can also be heated/cooled to personal taste!