No Strong Vibrations, Still Strong Sensations: Experience Stimulation On A Whole New Level With The Range Of Satisfyer Crystals. Made Of High-Quality Borosilicate Glass, The Satisfyer Double Crystal Is Especially Unique And Delightful. Borosilicate Glass Stands Out As The Perfect Material For Love Toys, Thanks To Its Remarkable Features, The Glass Is Stable And Shatterproof, Making It Absolutely Safe To Use. It Is Also Very Resistant To External Influences Acid, Chemicals, Heat And Cold Hardly Anything Can Harm The Satisfyer Double Crystal, Which Is Why It Is Also Incredibly Durable. Speaking Of Heat And Cold: Thanks To The Temperature-Resistant Material Of The Satisfyer Double Crystals, The Dildo Is Perfect For Hot And Cold Temperature Play. Simply Place It In Warm Water Before Use To Enjoy Relaxing Heat, Or Put It In The Fridge For An Excitingly Tingling Sensation. The Feeling Of Warm Or Cool Glass Will Invigorate Your Senses And Provide An Even More Intense Sensation.