Product SKU:FMDWCFSM Color/finish:Transparent Capacity:350ml Material:Borosilicate Glass Weight:0.46Kg Warranty:1 Year Good Health Recyclable and Reusable Offers an easy, grip and flip design and ideal for one handed use (with or w/o stra) perfect for every day use - on-the-run, on-the-road, or in-the-air travel Handcrafted with premium, double walled (borosilicat) glass, delivering a long-lasting, high quality glass drinkware solution The coffee sipper is microwave safe. It comes along with silicone to make it handy and slip-free Borosilicate glass is the material you want when dealing with any glassware for best results Its shatterproof, scratch resistant, durable and safe for microwave and dishwasher Double Wall Crystal Glass Coffee Sipper with Silicone Grip