Exquisitely crafted for unique sensual experiences, the Crystal Trainer Kit opens the door to a world of exhilarating new pleasures. Made from superior quality borosilicate glass, this dazzling kit is smooth, durable, and can be heated or cooled for breathtaking temperature play. Suitable with all lubricants.Product Dimensions (Inches):S: 4.8 x 1.69 x 1.69M: 5.55 x 1.89 x 1.89L: 6.06 x 2.2 x 2.2Package Dimensions: 9.02 x 8.31 x 2.36 (Inches)Insertable Dimensions (Inches):S: 4.45 x 0.87M: 5.12 x 1.1L: 5.47 x 1.42Product Material: Glass