This smooth, hypoallergenic glass plug is nonporous and body safe, and when cared for properly, is designed to last a lifetime. Run it under warm water or to heat things up. Chill it under cold water or put it in the fridge for a cool sensation. Cleanup is a snap. Use toy cleaner and warm water, or throw it in the dishwasher for a worry-free wash after the fun. 4.25" insertable length, 1.5" at widest point.